Just found a GLITCH. If you poison a monster (Has to die by the poison) in one round and go back in the same area (it also has to be the same map) the monster thats you poisoned will be automatically dead the next round, you get the EXP for it also, so make sure you poison a high level monster(20EXP) and a monster that gives you 8exp for killing it will give you 20exp. The poisoned monster in the next round will be dead, but it still has full hp?! weird.
When I learned this trick I poisoned a different monster in each round, when all of them where poisoned they all Died Aromatically the next round...
Well it comes after the attack if you stand still, but when you move it asks you what directions to stand in, It should ask you after Every action is already taken.