There sure is a counter to the Prisoner
A green bat with full shards is a good counter to the prisoner.
Use his power ability, that will give the bat immunity and invincibility for 3 rounds.
So you get to attack 2 round, refill your power points and do it again.
Guess what? His passive wont work, so it will not block, and unless someone removes beneficial effects he is pretty much immortal.
You can take the whole team with the bat alone, I've done it a number of times.
Not pretty, but very effective.
Cheers
Leave the prisoner Alone! (No, I dont have one)
Dev's, Where do we stand?
You've got a lot of good feedback here. What are your current thoughts?
Do you have an approach identified yet?