As a team, the heroes choose a creature with the greatest power among creatures they control. Destroy it. The bosses lose life equal to that creature's power.
Each hero taps a creature they control and puts X stun counters on it, where X is the number of bosses. (If a permanent with a stun counter would become untapped, remove one from it instead.)
Return two Ninja cards at random from the boss graveyard to the battlefield under the Boss team's control. (If there's only one, return it to the battlefield.)
