Bane, Force of Destruction

When Bane, Force of Destruction enters the battlefield exile target creature with the greatest toughness among creatures your opponents control until Bane, Force of Destruction leaves the battlefield.
At the beginning of your upkeep flip a coin, if heads Bane, Force of Destruction must attack this combat and gets +3/+3 and trample until end of turn. If tails, put 2 +1/+1 counters on each mayhem creature you control. Those creatures then get trample and must attack or trigger this combat if able.
invinci