Platinum Angel + Soul Conduit + Ethereal Champion

Platinum Angel

Soul Conduit

Ethereal Champion

How it works

1. Activate Ethereal Champion by paying 1 life, preventing the next one damage that will be dealt to Ethereal Champion this turn.
2. Repeat step 1 until you have zero life.
3. Activate Soul Conduit by paying 6 and tapping it, exchanging your life total with an opponent's.
4. The opponent loses the game due to having zero life.
5. You may repeat this on each of your turns.

This crafty combination lets you weaponize your own life total by using Ethereal Champion's self-damage ability to safely drain yourself down to zero life. While normally a death sentence, Platinum Angel's absolute protection keeps you safely in the game despite your zero (or even negative) life total. Once you have engineered this precarious state, you can fire off Soul Conduit to swap your zero life total with an unsuspecting opponent, instantly forcing them to lose the game.