Rowan, Scion of War + Debt to the Deathless + Wall of Blood

Rowan, Scion of War

Debt to the Deathless

Wall of Blood

How it works

1. Activate Wall of Blood by paying 1 life, giving it +1/+1 until end of turn.
2. Repeat step 1 until you have paid an amount of life equal to half the highest life total among your opponents, rounded up.
3. Activate Rowan by tapping it, reducing the cost of all black and/or red spells you cast this turn.
4. Cast Debt to the Deathless, choosing for X to equal the amount of life you've lost this turn, but paying a total of due to Rowan's ability.
5. Resolve Debt to the Deathless, causing each opponent to lose twice X life, and you to gain life equal to the life lost this way.
6. Each opponent loses the game due to having 0 or less life.

This brilliant drain combo weaponizes your own life total as a massive mana discount, turning self-inflicted damage into a lethal haymaker. By repeatedly paying life into Wall of Blood, you artificially inflate the cost-reduction value of Rowan, Scion of War right before tapping her as a sorcery. With those black and red spell costs slashed to near nothing, you can easily cast Debt to the Deathless for a colossal value of X that drains your opponents out of the game while simultaneously padding your own life total.