Shadowspear + Harmless Offering + Lich's Mastery

Prerequisites

• You have a way to cause Lich's Mastery to leave the battlefield.

Steps

1. 1Cast Harmless Offering by paying , giving an opponent control of Lich's Mastery.
2. 2If needed, activate Shadowspear by paying , causing all permanents your opponents control to lose hexproof and indestructible until end of turn.
3. 3Cause Lich's Mastery to leave the battlefield.
4. 4Lich's Mastery triggers, causing its controller to lose the game.

Effects

• Target opponent loses the game