Many Thanks !!!
Although I had to make some modifications, if it weren't for you I'd still be looking for a way around
if( md->bl.m == map->mapname2mapid("prontera") ) { md->status.max_hp += 9999999999; md->status.hp += 9999999999; }
You need to add "md->status.hp += 9999999999;" after "md->status.max_hp += 9999999999;" or the mob will spawn with its normal hp
Thanks goddameit
Edit: For people who want to use this modification: It's obvious that you can change the mapname or the HP modification for anything you want, just remember to recompile everytime you add something.