My Effin cat is driving me bonkers

Our cat is 7 months old. When he was five months old he went through a naughty phase but it settled down by 6 months. Now, he's back at it. Tearing at the walls, pulling the insulation out, when I picked him up he tore my wrist wide open. Now he's trying to play with my razor while I'm on the toilet (it's capped). Ugh, losing my mind. It's not like he doesn't have hundreds of toys in the living room.