Wow, I never thought it could be done at item_db.txt...Thanks!
I've managed to make it for EDP as it can be miss used at BG/PVP maps for not getting killed from some one in pvp or to increase enemy team score in bg. All classes won't have effect of "death" using EDP in the maps BG - "bat_b01" & PVP - "prt_pvp".
Please correct me if i've made any mistakes in this script.
678,Poison_Bottle,Poison Bottle,2,5000,,100,,,,,0xFFFFFFFF,7,2,,,,,,{ if(Class==Job_Assassin_Cross) { sc_start SC_DPoison,60000,0; sc_start SC_ASPDPOTION3,60000,0; } else if ( Class != Job_Assassin_Cross && strcharinfo(3) == "bat_b01" || strcharinfo(3) == "prt_pvp" ) { percentheal 0,0; } else percentheal -100,-100; },{},{}