Zevlor, Elturel Exile + Blood Tribute + Archfiend of Despair

Zevlor, Elturel Exile

Blood Tribute

Archfiend of Despair

How it works

1. Activate Zevlor by paying 2 and tapping it, causing you to copy the next spell you cast this turn that targets a single opponent for each other opponent.
2. Cast Blood Tribute with kicker by paying 4 and tapping a Vampire you control, targeting any opponent.
3. Zevlor triggers, copying Peer into the Abyss for each opponent.
4. Resolve each Peer into the Abyss, causing each opponent to lose half their life total, rounded up, and you to gain life equal to the life lost this way.
5. At the beginning of your end step, Archfiend of Despair triggers, causing each opponent to lose life equal to the life they lost this turn.
6. Each opponent loses the game due to having zero or less life.