Whenever another creature dies, put a +1/+1 counter on Orca.
When Orca dies, it deals damage equal to its power divided as you choose among any number of targets.
Orca is a sacrifice payoff that snowballs every time a creature dies, then turns into a board wipe or burst-kill when it leaves play. You build an aristocrats engine with cheap fodder and repeatable sac outlets, let Orca balloon while you drain incrementally, then sacrifice or blink it to fling its power across the table for the win. The deck plays a value-driven attrition game and closes by converting accumulated counters into face damage.
Free, repeatable growth—any creature dying anywhere fuels Orca, including opponents' creatures and board wipes
Built-in finisher: a 15+ power Orca dying can split lethal damage across multiple opponents at once
Rakdos has elite removal, reanimation, and sacrifice support
Trample means even mid-sized Orca pressures life totals through chump blockers
Seven mana for a body that wants to die makes it a slow, telegraphed plan
Exile-based removal (Swords, Path, Leyline of the Void on graveyard recursion) shuts down the death payoff
Relies on a steady stream of creature deaths—stalled boards leave Orca small
No evasion beyond trample and no protection built in; easily chump-blocked or removed before you sacrifice it
Reanimation that can rebuy Orca or bring back fodder to keep the death engine churning.
Add free sacrifice outlets (Viscera Seer, Carrion Feeder) and aristocrat drains (Blood Artist, Zulaport Cutthroat, Bastion of Remembrance) so even a small Orca's deaths pay off. Tighten the mana with fast rocks and rituals to deploy Orca early, then add reanimation (Reanimate, Animate Dead) and recursion to rebuy it after each fling. Top end: pair a free sac outlet with token doublers or Pitiless Plunderer for explosive loops that grow and discharge Orca in one turn.