Mortuary + Phyrexian Walker + Bolas's Citadel + Bloodflow Connoisseur

Mortuary

Phyrexian Walker

Bolas's Citadel

Bloodflow Connoisseur

How it works

1. Activate Bloodflow Connoisseur by sacrificing Phyrexian Walker
2. When Phyrexian Walker dies, Mortuary triggers, putting Phyrexian Walker from your graveyard onto the top of your library.
3. Resolve the Bloodflow Connoisseur ability.
4. Cast Phyrexian Walker from the top of your library by paying 0 life.
5. Repeat.

This clever engine turns free recursion into a bottomless well of storm count and creature triggers by turning your library into a recycling bin. With Bolas's Citadel granting you the ability to cast spells straight from the top of your library, you can continuously redeploy the zero-mana Phyrexian Walker without ever paying its mana cost—substituting life instead, though the loop itself costs zero life. Whenever you sacrifice that artifact creature to Bloodflow Connoisseur to grow its power with a +1/+1 counter, Mortuary immediately catches it in the graveyard and tucks it right back onto the top of your library. Because the Citadel lets you play it again instantly, you can repeat the process indefinitely to rack up an astronomical storm count or trigger any number of death-related effects.