From TMW: rEvolt
May mutate 4 attributes up to 20%.
Poison Skulls are first experienced when travelling north of Hurnscald into the northern mines. They are hard to kill for the newer player, as they seem to be able to dodge most arrows and strikes. Still, when they are slain, they give a good deal of experience points. In the graveyard they are a common monster, and can sneak up and take you by surprise while you are busy dealing with other monsters.
Poison Skulls, as their name suggests, have the ability to strike you with a poison. They will drain your health to about 20, and as they also hit hard, this will easily bring an end to the low to medium level player.