Lucky Block

The Lucky Block was a special chest block that, if opened or destroyed, could give whoever opened it a prize or it could spawn in something dangerous like Mobzilla. It was added into Crazy Craft in the 3.0 update, were Squid, Ash, and Stampy found over 30 lucky blocks and randomly opened them until Stampy got a chain saw, Ash got special armors, and Squid got a big bertha. However they also spawned in lava, a charged creeper, and Mobzilla.