Mortuary + Phyrexian Altar + Bolas's Citadel + Rograkh, Son of Rohgahh

Mortuary

Phyrexian Altar

Bolas's Citadel

Rograkh, Son of Rohgahh

How it works

1. Activate Phyrexian Altar by sacrificing Rograkh
2. When Rograkh dies, Mortuary triggers, putting Rograkh from your graveyard onto the top of your library.
3. Cast Rograkh from the top of your library by paying 0 life.
4. Repeat.

This loop is an exquisite piece of arcane machinery that turns a tiny costless creature into an engine of endless power. By feeding Rograkh, Son of Rohgahh to Phyrexian Altar, you generate a mana of any color while triggering its sacrifice and death properties. The silent guardian of this cycle is Mortuary, whose static enchantment ability immediately intercepts Rograkh as it hits the graveyard, neatly tucking it back onto the top of your library. From there, Bolas's Citadel steps in with its passive mastery over the library's peak, allowing you to recast Rograkh directly from the top for zero life, feeding the Altar anew.