VisualEthics

I am doing a Co-op playthrough with some friends and am wondering what a good build would be, due to the extremely harsh scaling of having three players.
Friend A is currently a Death's Poker and Friend B is going Dragon King's Cragblade soon.
I wanna do a good amount of damage and draw aggro (due to being the player with more experience)
Starting class is Prisoner, Pre-Maliketh (I don't mind wasting stat points in a casual playthrough)