Pleagious steps to the end of his cell, to the door. The sounds of combat intrigued him greatly. He pushed the cell door, if it doesn't budge he rears back a fist smiles and slams it into the door as hard he can.

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Unarmed punch. (do I need to roll attack...it's a door? O.o)
(1d100)[70] vs 55 (would this be +30 because it's inanimate? *shrug*)

Damage
(1d10+13)[20] Primitive (7)