Living Bomb

Indestructible, Hexproof When this creature enters, add 4 time counters. At the start of each draw step remove a time counter from this creature unless its controlling player ether sacrifices 1 permanent to hold the counter, or three permanents to move this creature to the next player in line clockwise. upon losing all time counters, sacrifice this creature When this creature leaves the battlefield its controlling player takes 5 unpreventable damage.