diff --git a/src/map/atcommand.c b/src/map/atcommand.c
index c5a74bf922..18a78357a5 100644
--- a/src/map/atcommand.c
+++ b/src/map/atcommand.c
@@ -8066,6 +8066,8 @@ ACMD_FUNC(cash)
 			}
 			else clif_displaymessage(fd, msg_txt(sd,149)); // Unable to decrease the number/value.
 		} else {
+			if (-value > sd->cashPoints) //By command, if cash < value, force it to remove all
+				value = -sd->cashPoints;
 			if( (ret=pc_paycash(sd, -value, 0, LOG_TYPE_COMMAND)) >= 0){
 				// If this option is set, the message is already sent by pc function
 				if( !battle_config.cashshop_show_points ){
diff --git a/src/map/cashshop.c b/src/map/cashshop.c
index c7458f5d58..b9d0402433 100644
--- a/src/map/cashshop.c
+++ b/src/map/cashshop.c
@@ -190,22 +190,26 @@ static void cashshop_read_db( void ){
 	}
 }
 
-/*
- * Attempts to purchase a cashshop item from the list.
+/** Attempts to purchase a cashshop item from the list.
  * Checks if the transaction is valid and if the user has enough inventory space to receive the item.
- * If yes, take cashpoints and give items;
- * else return clif_error.
+ * If yes, take cashpoints and give items; else return clif_error.
+ * @param sd Player that request to buy item(s)
+ * @param kafrapoints
+ * @param n Count of item list
+ * @param item_list Array of item ID
+ * @return true: success, false: fail
  */
-void cashshop_buylist( struct map_session_data* sd, uint32 kafrapoints, int n, uint16* item_list ){
+bool cashshop_buylist( struct map_session_data* sd, uint32 kafrapoints, int n, uint16* item_list ){
 	uint32 totalcash = 0;
 	uint32 totalweight = 0;
 	int i,new_;
 
 	if( sd == NULL || item_list == NULL ){
-		return;
+		clif_cashshop_result( sd, 0, CASHSHOP_RESULT_ERROR_UNKNOWN );
+		return false;
 	}else if( sd->state.trading ){
 		clif_cashshop_result( sd, 0, CASHSHOP_RESULT_ERROR_PC_STATE );
-		return;
+		return false;
 	}
 
 	new_ = 0;
@@ -218,14 +222,14 @@ void cashshop_buylist( struct map_session_data* sd, uint32 kafrapoints, int n, u
 
 		if( tab > CASHSHOP_TAB_SEARCH ){
 			clif_cashshop_result( sd, nameid, CASHSHOP_RESULT_ERROR_UNKNOWN );
-			return;
+			return false;
 		}
 
 		ARR_FIND( 0, cash_shop_items[tab].count, j, nameid == cash_shop_items[tab].item[j]->nameid );
 
 		if( j == cash_shop_items[tab].count || !itemdb_exists( nameid ) ){
-			clif_cashshop_result( sd, nameid, CASHSHOP_RESULT_ERROR_UNKNOWN );
-			return;
+			clif_cashshop_result( sd, nameid, CASHSHOP_RESULT_ERROR_UNKONWN_ITEM );
+			return false;
 		}else if( !itemdb_isstackable( nameid ) && quantity > 1 ){
 			uint32* quantity_ptr = (uint32*)item_list + i * 5 + 2;
 			ShowWarning( "Player %s (%d:%d) sent a hexed packet trying to buy %d of nonstackable cash item %d!\n", sd->status.name, sd->status.account_id, sd->status.char_id, quantity, nameid );
@@ -242,7 +246,7 @@ void cashshop_buylist( struct map_session_data* sd, uint32 kafrapoints, int n, u
 
 			case CHKADDITEM_OVERAMOUNT:
 				clif_cashshop_result( sd, nameid, CASHSHOP_RESULT_ERROR_OVER_PRODUCT_TOTAL_CNT );
-				return;
+				return false;
 		}
 
 		totalcash += cash_shop_items[tab].item[j]->price * quantity;
@@ -251,15 +255,15 @@ void cashshop_buylist( struct map_session_data* sd, uint32 kafrapoints, int n, u
 
 	if( ( totalweight + sd->weight ) > sd->max_weight ){
 		clif_cashshop_result( sd, 0, CASHSHOP_RESULT_ERROR_INVENTORY_WEIGHT );
-		return;
+		return false;
 	}else if( pc_inventoryblank( sd ) < new_ ){
 		clif_cashshop_result( sd, 0, CASHSHOP_RESULT_ERROR_INVENTORY_ITEMCNT );
-		return;
+		return false;
 	}
 
 	if(pc_paycash( sd, totalcash, kafrapoints, LOG_TYPE_CASH ) < 0){
 		clif_cashshop_result( sd, 0, CASHSHOP_RESULT_ERROR_SHORTTAGE_CASH );
-		return;
+		return false;
 	}
 
 	for( i = 0; i < n; ++i ){
@@ -278,21 +282,22 @@ void cashshop_buylist( struct map_session_data* sd, uint32 kafrapoints, int n, u
 			switch( pc_additem( sd, &item_tmp, quantity, LOG_TYPE_CASH ) ){
 				case ADDITEM_OVERWEIGHT:
 					clif_cashshop_result( sd, nameid, CASHSHOP_RESULT_ERROR_INVENTORY_WEIGHT );
-					return;
+					return false;
 				case ADDITEM_OVERITEM:
 					clif_cashshop_result( sd, nameid, CASHSHOP_RESULT_ERROR_INVENTORY_ITEMCNT );
-					return;
+					return false;
 				case ADDITEM_OVERAMOUNT:
 					clif_cashshop_result( sd, nameid, CASHSHOP_RESULT_ERROR_OVER_PRODUCT_TOTAL_CNT );
-					return;
+					return false;
 				case ADDITEM_STACKLIMIT:
 					clif_cashshop_result( sd, nameid, CASHSHOP_RESULT_ERROR_RUNE_OVERCOUNT );
-					return;
+					return false;
 			}
 		}
 	}
 
-	clif_cashshop_result( sd, 0, CASHSHOP_RESULT_SUCCESS );
+	clif_cashshop_result( sd, 0, CASHSHOP_RESULT_SUCCESS ); //Doesn't show any message?
+	return true;
 }
 
 /*
diff --git a/src/map/cashshop.h b/src/map/cashshop.h
index c2314f2fa9..daf1833788 100644
--- a/src/map/cashshop.h
+++ b/src/map/cashshop.h
@@ -10,7 +10,7 @@
 int do_init_cashshop( void );
 int do_final_cashshop( void );
 void cashshop_reloaddb( void );
-void cashshop_buylist( struct map_session_data* sd, uint32 kafrapoints, int n, uint16* item_list );
+bool cashshop_buylist( struct map_session_data* sd, uint32 kafrapoints, int n, uint16* item_list );
 
 // Taken from AEGIS
 enum CASH_SHOP_TAB_CODE{
diff --git a/src/map/clif.c b/src/map/clif.c
index be4fc347d3..322668effe 100644
--- a/src/map/clif.c
+++ b/src/map/clif.c
@@ -14965,8 +14965,6 @@ void clif_cashshop_result( struct map_session_data *sd, uint16 item_id, uint16 r
 /// 0288 <packet len>.W <kafra points>.L <count>.W { <amount>.W <name id>.W }.4B*count (PACKETVER >= 20100803)
 /// 0848 <packet len>.W <count>.W <packet len>.W <kafra points>.L <count>.W { <amount>.W <name id>.W <tab>.W }.6B*count (PACKETVER >= 20130000)
 void clif_parse_cashshop_buy(int fd, struct map_session_data *sd){
-
-	int fail = 0;
 	struct s_packet_db* info;
 	int cmd = RFIFOW(fd,0);
 
@@ -14974,16 +14972,17 @@ void clif_parse_cashshop_buy(int fd, struct map_session_data *sd){
 
 	info = &packet_db[sd->packet_ver][cmd];
 
-	if( sd->state.trading || !sd->npc_shopid )
-		fail = 1;
+	if( sd->state.trading || !sd->npc_shopid ) {
+		clif_cashshop_ack(sd,1);
+		return;
+	}
 	else {
 #if PACKETVER < 20101116
 		short nameid = RFIFOW(fd,info->pos[0]);
 		short amount = RFIFOW(fd,info->pos[1]);
 		int points   = RFIFOL(fd,info->pos[2]);
 
-		fail = npc_cashshop_buy(sd, nameid, amount, points);
-		clif_cashshop_ack(sd,fail);
+		clif_cashshop_ack(sd,npc_cashshop_buy(sd, nameid, amount, points));
 #else
 		int s_itl = (cmd==0x848)?10:4; //item _list size (depend on cmd even for 2013+)
 		int len    = RFIFOW(fd,info->pos[0]);
@@ -14996,13 +14995,15 @@ void clif_parse_cashshop_buy(int fd, struct map_session_data *sd){
 			return;
 		}
 		if(cmd==0x848){
-			cashshop_buylist( sd, points, count, item_list);
+			if (cashshop_buylist( sd, points, count, item_list))
+				clif_cashshop_ack(sd,0);
+			return;
 		} else {
-			fail = npc_cashshop_buylist(sd,points,count,item_list);
+			clif_cashshop_ack(sd,npc_cashshop_buylist(sd,points,count,item_list));
+			return;
 		}
 #endif
 	}
-	clif_cashshop_ack(sd,fail);
 }
 
 /// Adoption System
diff --git a/src/map/itemdb.h b/src/map/itemdb.h
index 1011d39c06..a7ff9307cc 100644
--- a/src/map/itemdb.h
+++ b/src/map/itemdb.h
@@ -8,33 +8,30 @@
 #include "../common/mmo.h" // ITEM_NAME_LENGTH
 #include "map.h"
 
-// 32k array entries in array (the rest goes to the db)
+/// 32k array entries in array (the rest goes to the db)
 #define MAX_ITEMDB 0x8000
-
-//Use apple for unknown items.
+///Use apple for unknown items.
 #define UNKNOWN_ITEM_ID 512
-
-// The maximum number of item delays
+/// The maximum number of item delays
 #define MAX_ITEMDELAYS	10
-
-#define MAX_SEARCH	5  //Designed for search functions, species max number of matches to display.
-
-/* maximum amount of items a combo may require */
+///Designed for search functions, species max number of matches to display.
+#define MAX_SEARCH	5
+///Maximum amount of items a combo may require
 #define MAX_ITEMS_PER_COMBO 6
 
 //The only item group required by the code to be known. See const.txt for the full list.
 #define IG_FINDINGORE 6
 #define IG_POTION 37
 
-#define MAX_ITEMGROUP 390 ///The max. item group count (increase this when needed). TODO: Remove this limit and use dynamic allocaton
+#define MAX_ITEMGROUP 390 ///The max. item group count (increase this when needed). TODO: Remove this limit and use dynamic allocaton if needed
 
-#define MAX_ITEMGROUP_RANDGROUP 4	///Max group for random item (increase this when needed).
+#define MAX_ITEMGROUP_RANDGROUP 4	///Max group for random item (increase this when needed). TODO: Remove this limit and use dynamic allocaton if needed
 
 #define CARD0_FORGE 0x00FF
 #define CARD0_CREATE 0x00FE
 #define CARD0_PET ((short)0xFF00)
 
-//Marks if the card0 given is "special" (non-item id used to mark pets/created items. [Skotlex]
+///Marks if the card0 given is "special" (non-item id used to mark pets/created items. [Skotlex]
 #define itemdb_isspecial(i) (i == CARD0_FORGE || i == CARD0_CREATE || i == CARD0_PET)
 
 ///Enum of item id (for hardcoded purpose)
@@ -120,9 +117,7 @@ enum item_itemid {
 	ITEMID_JOB_MANUAL50					= 14592,
 };
 
-/**
- * Mercenary Scrolls
- */
+///Mercenary Scrolls
 enum mercenary_scroll_item_list {
 	ITEMID_BOW_MERCENARY_SCROLL1 = 12153,
 	ITEMID_BOW_MERCENARY_SCROLL2,
@@ -156,9 +151,7 @@ enum mercenary_scroll_item_list {
 	ITEMID_SPEARMERCENARY_SCROLL10,
 };
 
-/**
- * Rune Knight
- */
+///Rune Knight
 enum rune_item_list {
 	ITEMID_NAUTHIZ		= 12725,
 	ITEMID_RAIDO,
@@ -172,9 +165,7 @@ enum rune_item_list {
 	ITEMID_LUX_ANIMA	= 22540,
 };
 
-/**
- * Mechanic
- */
+///Mechanic
 enum mechanic_item_list {
 	ITEMID_ACCELERATOR				= 2800,
 	ITEMID_HOVERING_BOOSTER,
@@ -193,9 +184,7 @@ enum mechanic_item_list {
 	ITEMID_LIME_GREEN_PTS,
 };
 
-/**
- * Genetic
- */
+///Genetic
 enum genetic_item_list {
 	ITEMID_SEED_OF_HORNY_PLANT			= 6210,
 	ITEMID_BLOODSUCK_PLANT_SEED			= 6211,
@@ -250,9 +239,7 @@ enum genetic_item_list {
 	ITEMID_BLACK_THING_TO_THROW,
 };
 
-/**
- * Guillotine Cross
- */
+///Guillotine Cross
 enum poison_item_list {
 	ITEMID_PARALYSE = 12717,
 	ITEMID_LEECHESEND,
@@ -264,9 +251,7 @@ enum poison_item_list {
 	ITEMID_VENOMBLEED,
 };
 
-/**
- * Spell Books
- */
+///Spell Books
 enum spell_book_item_list {
 	ITEMID_MAGIC_BOOK_FB = 6189,
 	ITEMID_MAGIC_BOOK_CB,
@@ -287,9 +272,7 @@ enum spell_book_item_list {
 	ITEMID_MAGIC_BOOK_DL,
 };
 
-/**
- * Cash Food
- */
+///Cash Food
 enum cash_food_item_list {
 	ITEMID_STR_DISH10_  = 12202,
 	ITEMID_AGI_DISH10_,
@@ -299,10 +282,12 @@ enum cash_food_item_list {
 	ITEMID_VIT_DISH10_,
 };
 
+///Item No Use List
 enum item_nouse_list {
 	NOUSE_SITTING = 0x01,
 };
 
+///Item job
 enum e_item_job {
 	ITEMJ_NORMAL      = 0x01,
 	ITEMJ_UPPER       = 0x02,
@@ -312,6 +297,7 @@ enum e_item_job {
 	ITEMJ_THIRD_BABY  = 0x20,
 };
 
+///Item combo struct
 struct item_combo {
 	struct script_code *script;
 	unsigned short *nameid;/* nameid array */
@@ -320,6 +306,7 @@ struct item_combo {
 	bool isRef;/* whether this struct is a reference or the master */
 };
 
+///Main item data struct
 struct item_data {
 	uint16 nameid;
 	char name[ITEM_NAME_LENGTH],jname[ITEM_NAME_LENGTH];
@@ -386,7 +373,7 @@ struct item_data {
 /* Struct of item group entry */
 struct s_item_group {
 	uint16 nameid, ///item id
-		duration; ///duration if item as rental item
+		duration; ///duration if item as rental item (in minute)
 	uint16 amount; ///amount of item will be obtained
 	bool isAnnounced, ///broadcast if player get this item
 		isNamed; ///named the item (if possible)
@@ -403,7 +390,7 @@ struct s_item_group_random {
 struct s_item_group_db {
 	struct s_item_group *must;
 	uint16 must_qty;
-	struct s_item_group_random random[MAX_ITEMGROUP_RANDGROUP]; //! TODO: Move this fixed array to dynamic allocation!
+	struct s_item_group_random random[MAX_ITEMGROUP_RANDGROUP]; //! TODO: Move this fixed array to dynamic allocation if needed.
 };
 
 struct item_data* itemdb_searchname(const char *name);
diff --git a/src/map/pc.c b/src/map/pc.c
index 6a1fe7ce57..eb2cdfcfba 100755
--- a/src/map/pc.c
+++ b/src/map/pc.c
@@ -3854,10 +3854,14 @@ int pc_payzeny(struct map_session_data *sd,int zeny, enum e_log_pick_type type,
 
 	return 0;
 }
-/*==========================================
- * Cash Shop
- *------------------------------------------*/
 
+/** Makes player pays by using cash points
+ * @param sd Player who pays
+ * @param price How many point player has to pay
+ * @param points
+ * @param type e_log_pick_type
+ * @return -2: Paying negative points, -1: Not enough points, otherwise is succes (cash+points)
+ */
 int pc_paycash(struct map_session_data *sd, int price, int points, e_log_pick_type type ){
 	int cash;
 	nullpo_retr(-1,sd);
diff --git a/src/map/skill.c b/src/map/skill.c
index c6c2b706cb..bcc4b90c44 100755
--- a/src/map/skill.c
+++ b/src/map/skill.c
@@ -507,6 +507,9 @@ bool skill_isNotOk(uint16 skill_id, struct map_session_data *sd)
 	if (skill_id == AL_TELEPORT && sd->skillitem == skill_id && sd->skillitemlv > 2)
 		return false; // Teleport lv 3 bypasses this check.[Inkfish]
 
+	if (map[m].flag.noskill)
+		return true;
+
 	// Epoque:
 	// This code will compare the player's attack motion value which is influenced by ASPD before
 	// allowing a skill to be cast. This is to prevent no-delay ACT files from spamming skills such as
@@ -643,7 +646,7 @@ bool skill_isNotOk(uint16 skill_id, struct map_session_data *sd)
 			break;
 
 	}
-	return (map[m].flag.noskill);
+	return false;
 }
 
 /** Check if the homunculus skill is ok to be processed
@@ -9789,32 +9792,24 @@ int skill_castend_nodamage_id (struct block_list *src, struct block_list *bl, ui
 		}
 		break;
 
-	case MH_SILENT_BREEZE: {
-			 struct status_change *ssc = status_get_sc(src);
-			 struct block_list *m_bl = battle_get_master(src);
-			 int heal;
-			 if(tsc){
-				 const enum sc_type scs[] = {
-				 SC_MANDRAGORA, SC_HARMONIZE, SC_DEEPSLEEP, SC_VOICEOFSIREN, SC_SLEEP, SC_CONFUSION, SC_HALLUCINATION
-				};
-				 for (i = 0; i < ARRAYLENGTH(scs); i++) {
-					 if (tsc->data[scs[i]]) status_change_end(bl, scs[i], INVALID_TIMER);
-				 }
-				 if (!tsc->data[SC_SILENCE]) //put inavoidable silence on target
-					 status_change_start(src,bl, SC_SILENCE, 100, skill_lv, 0,0,0, skill_get_time(skill_id, skill_lv),1|2|8);
-			 }
-			 heal = status_get_sp(src) + status_get_lv(src); //cur_sp+blvl @TODO need real value
-			 status_heal(bl, heal, 0, 7);
+	case MH_SILENT_BREEZE:
+		{
+			//Silences the homunculus and target
+			status_change_start(src,src,SC_SILENCE,10000,skill_lv,0,0,0,skill_get_time(skill_id,skill_lv),0);
+			status_change_start(src,bl,SC_SILENCE,10000,skill_lv,0,0,0,skill_get_time(skill_id,skill_lv),0);
 
-			 //now inflict silence on everyone
-			 if(ssc && !ssc->data[SC_SILENCE]) //put inavoidable silence on homun
-				status_change_start(src, src, SC_SILENCE, 100, skill_lv, 0,0,0, skill_get_time(skill_id, skill_lv),1|2|8);
-			 if(m_bl) {
-				 struct status_change *msc = status_get_sc(m_bl);
-				 if(msc && !msc->data[SC_SILENCE]) //put inavoidable silence on master
-					 status_change_start(src, m_bl, SC_SILENCE, 100, skill_lv, 0,0,0, skill_get_time(skill_id, skill_lv),1|2|8);
-			 }
-			 if (hd)
+			//Recover the target's HP
+			status_heal(bl,status_get_lv(src)+status_get_sp(src),0,3); //(custom)
+
+			//Removes these SC from target
+			if (tsc) {
+				const enum sc_type scs[] = {
+					SC_MANDRAGORA, SC_HARMONIZE, SC_DEEPSLEEP, SC_VOICEOFSIREN, SC_SLEEP, SC_CONFUSION, SC_HALLUCINATION
+				};
+				for (i = 0; i < ARRAYLENGTH(scs); i++)
+					if (tsc->data[scs[i]]) status_change_end(bl, scs[i], INVALID_TIMER);
+			}
+			if (hd)
 				skill_blockhomun_start(hd, skill_id, skill_get_cooldown(skill_id, skill_lv));
 		}
 		break;
@@ -11864,7 +11859,7 @@ struct skill_unit_group* skill_unitsetting (struct block_list *src, uint16 skill
 		int alive = 1;
 
 		// are the coordinates out of range?
-		if( ux <= 0 || uy <= 0 || ux >= map[sd->bl.m].xs || uy >= map[sd->bl.m].ys ){
+		if( ux <= 0 || uy <= 0 || ux >= map[src->m].xs || uy >= map[src->m].ys ){
 			continue;
 		}
 
diff --git a/src/map/status.c b/src/map/status.c
index fc2b9d2b79..eb0cdb0db5 100644
--- a/src/map/status.c
+++ b/src/map/status.c
@@ -7221,7 +7221,7 @@ int status_get_sc_def(struct block_list *src, struct block_list *bl, enum sc_typ
 * @param src: Source of the status change [PC|MOB|HOM|MER|ELEM|NPC]
 * @param bl: Target of the status change (See: enum sc_type)
 * @param type: Status change (SC_*)
-* @param rate: Initial percentage rate of affecting bl
+* @param rate: Initial percentage rate of affecting bl (0~10000)
 * @param val1~4: Depends on type of status change
 * @param tick: Initial duration that the status change affects bl
 * @param flag: Value which determines what parts to calculate