Item bonus:

doc/item_bonus.txt

@@ -446,6 +446,7 @@ bonus2 bAddSkillBlow,sk,n;		Knock back the target by n cells when using skill sk
 bonus bNoKnockback,n;     		Character is no longer knocked back by enemy skills with such effect (n is meaningless)
 bonus bNoGemStone,n;      		Skills requiring Gemstones do not require them (n is meaningless)
                           		NOTE: Hocus Pocus still requires 1 Yellow Gemstone, Ganbantein requirements not reduced
+bonus bNoEleStone,n;      		Removes Flame, Ice, Wind Stone, or Shadow Orb from skill requirement. 'n' is meaningless
 bonus bIntravision,n;     		Always see Hiding and Cloaking players/mobs (n is meaningless)
 bonus bPerfectHide,n;     		Hidden/cloaked character is no longer detected by monsters with 'detector' mode (n is meaningless)
 bonus bRestartFullRecover,n;	When reviving, HP and SP are fully healed (n is meaningless)

src/map/itemdb.h

@@ -93,6 +93,10 @@ enum item_itemid
 	ITEMID_COATING_BOTTLE				= 7139,
 	ITEMID_FRAGMENT_OF_CRYSTAL			= 7321,
 	ITEMID_SKULL_						= 7420,
+	ITEMID_FLAME_STONE					= 7521,
+	ITEMID_ICE_STONE					= 7522,
+	ITEMID_WIND_STONE					= 7523,
+	ITEMID_SHADOW_ORB					= 7524,
 	ITEMID_TOKEN_OF_SIEGFRIED			= 7621,
 	ITEMID_TRAP_ALLOY					= 7940,
 	ITEMID_CATNIP_FRUIT					= 11602,
@@ -489,6 +493,7 @@ struct item_data* itemdb_exists(unsigned short nameid);
 #define itemdb_iscashfood(id) ( (id) >= ITEMID_STR_DISH10_ && (id) <= ITEMID_VIT_DISH10_ )
 #define itemdb_is_GNbomb(n) (n >= ITEMID_APPLE_BOMB && n <= ITEMID_VERY_HARD_LUMP)
 #define itemdb_is_GNthrowable(n) (n >= ITEMID_MYSTERIOUS_POWDER && n <= ITEMID_BLACK_THING_TO_THROW)
+#define itemid_iselestone(id) ( (id) >= ITEMID_FLAME_STONE && (id) <= ITEMID_SHADOW_ORB )
 const char* itemdb_typename(enum item_types type);
 const char *itemdb_typename_ammo (enum e_item_ammo ammo);
 bool itemdb_is_spellbook2(unsigned short nameid);

src/map/map.h

@@ -477,6 +477,7 @@ enum _sp {
 	SP_STATE_NORECOVER_RACE, SP_CRITICAL_RANGEATK, SP_MAGIC_ADDRACE2, SP_IGNORE_MDEF_RACE2_RATE, // 2079-2082
 	SP_WEAPON_ATK_RATE, SP_WEAPON_MATK_RATE, SP_DROP_ADDRACE, SP_DROP_ADDCLASS, SP_NO_MADO_FUEL, // 2083-2087
 	SP_IGNORE_DEF_CLASS_RATE, SP_REGEN_PERCENT_HP, SP_REGEN_PERCENT_SP, //2088-2091
+	SP_NO_ELESTONE,
 };
 
 enum _look {

src/map/pc.c

@@ -3044,6 +3044,10 @@ void pc_bonus(struct map_session_data *sd,int type,int val)
 			if (sd->state.lr_flag != 2)
 				sd->special_state.no_mado_fuel = 1;
 			break;
+		case SP_NO_ELESTONE: // bonus bNoEleStone,n;
+			if(sd->state.lr_flag != 2)
+				sd->special_state.no_elestone = 1;
+			break;
 		default:
 			if (running_npc_stat_calc_event) {
 				ShowWarning("pc_bonus: unknown bonus type %d %d in OnPCStatCalcEvent!\n", type, val);

src/map/pc.h

@@ -263,6 +263,7 @@ struct map_session_data {
 		unsigned int no_knockback : 1;
 		unsigned int bonus_coma : 1;
 		unsigned int no_mado_fuel : 1; // Disable Magic_Gear_Fuel consumption [Secret]
+		unsigned int no_elestone : 1; // bNoEleStone [Cydh]
 	} special_state;
 	uint32 login_id1, login_id2;
 	unsigned short class_;	//This is the internal job ID used by the map server to simplify comparisons/queries/etc. [Skotlex]

src/map/script_constants.h

@@ -3174,6 +3174,8 @@
 	export_constant(STOR_MODE_GET);
 	export_constant(STOR_MODE_PUT);
 
+	script_set_constant("bNoEleStone",SP_NO_ELESTONE,false);
+
 	#undef export_constant
 
 #endif /* _SCRIPT_CONSTANTS_H_ */

src/map/skill.c

@@ -15964,6 +15964,8 @@ struct skill_condition skill_get_requirement(struct map_session_data* sd, uint16
 						}
 					}
 				}
+				else if (sd->special_state.no_elestone && itemid_iselestone(req.itemid[i]))
+					req.itemid[i] = req.amount[i] = 0;
 				// Check requirement for Magic Gear Fuel
 				if (req.itemid[i] == ITEMID_MAGIC_GEAR_FUEL) {
 					if (sd->special_state.no_mado_fuel)