Catapult Fodder // Catapult Captain and Serra Avatar on the battlefield.
Catapult Captain does not have summoning sickness.
You have a higher life total than an opponent.
({2} magic symbol) ({B} magic symbol) available.
Steps
Activate Catapult Captain by paying ({2} magic symbol) ({B} magic symbol) , tapping it, and sacrificing Serra Avatar, causing target opponent with a lower life total than you to lose life equal to its toughness.
The opponent loses the game due to having zero or less life.