Mortuary + Lithatog + Phyrexian Walker + Bolas's Citadel

Mortuary

Lithatog

Phyrexian Walker

Bolas's Citadel

How it works

1. Activate Lithatog 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 Lithatog ability.
4. Cast Phyrexian Walker from the top of your library by paying 0 life.
5. Repeat.

This clever loop turns zero-mana creatures into an engine of endless sacrifices and buffs, anchored by Bolas's Citadel allowing you to cast spells directly from the top of your library by paying life instead of mana. Because Phyrexian Walker costs zero to cast, you can repeatedly feed it to Lithatog's sacrifice ability to grow your beast and trigger its death. Every time the tiny artifact creature hits the graveyard, Mortuary instantly catches it and tucks it right back onto the top of your library, perfectly positioned for Bolas's Citadel to let you cast it all over again for free.