Overkill + Jaws of Defeat

Prerequisites

• You have a way to cause a creature to enter the battlefield under your control.

Steps

1. 1Cause any creature to enter the battlefield under your control, triggering Jaws of Defeat.
2. 2Holding priority, cast Overkill by paying , giving the creature that entered -0/-9999 until end of turn.
3. 3The creature dies as a state-based action due to having less than 0 toughness.
4. 4Resolve the Jaws of Defeat trigger, causing target opponent to lose life equal to the difference between the creature's power and toughness, using its last known information.

Effects

• Near-infinite lifeloss for target opponent
• Target opponent loses the game