// Trample
this.addAbility(TrampleAbility.getInstance());
// Volatile Rig attacks each turn if able.
this.addAbility(new AttacksEachTurnStaticAbility());
// Whenever Volatile Rig is dealt damage, flip a coin. If you lose the flip, sacrifice Volatile Rig.
this.addAbility(new VolatileRigTriggeredAbility());
// When Volatile Rig dies, flip a coin. If you lose the flip, it deals 4 damage to each creature and each player.