Mortuary + Bolas's Citadel + Viscera Seer + Al Bhed Salvagers

Mortuary

Bolas's Citadel

Viscera Seer

Al Bhed Salvagers

How it works

1. Activate Viscera Seer by sacrificing it.
2. When Viscera Seer dies, Mortuary and Al Bhed Salvagers trigger.
3. Resolve the Mortuary trigger, putting Viscera Seer from your graveyard onto the top of your library.
4. Resolve the Al Bhed Salvagers trigger, causing you to gain 1 life and target opponent to lose 1 life.
5. Resolve the Viscera Seer ability.
6. Cast Viscera Seer from the top of your library by paying 1 life.
7. Repeat.

This elegant loop turns the top of your library into an endless armory, fueled by paying life instead of mana to cast spells thanks to Bolas's Citadel. By sacrificing Viscera Seer to its own ability, you trigger Mortuary to neatly place the seer right back onto the top of your library, bypassing conventional mana costs entirely. Meanwhile, Al Bhed Salvagers acts as the ultimate payoff for this cycle, draining your opponents' life totals and padding your own life total with every single sacrifice iteration to offset the cost of Bolas's Citadel.