Leonardo, Worldly Warrior + Phyrexian Altar + God-Eternal Oketra + Genesis Chamber

Leonardo, Worldly Warrior

Phyrexian Altar

God-Eternal Oketra

Genesis Chamber

How it works

1. Cast Leonardo either from your hand or from the command zone by paying due to its cost reduction.
2. God-Eternal Oketra triggers, creating a creature token.
3. When Leonardo enters, Genesis Chamber triggers, creating a creature token.
4. Activate Phyrexian Altar by sacrificing Leonardo, adding .
5. Put Leonardo into the command zone from your graveyard.
6. Repeat.

This elegant loop relies on Leonardo, Worldly Warrior's built-in affinity for creatures to make casting your commander practically free, costing only the single white mana you generate by feeding it to Phyrexian Altar. As Leonardo repeatedly enters the battlefield, Genesis Chamber does double duty by feeding that affinity discount with a fresh Myr token while God-Eternal Oketra rewards every single cast by spawning a sturdy 4/4 Zombie Warrior. By constantly cycling your commander back to the command zone and recastable for just {W}, you turn these token-generating triggers into an endless engine for sacrifice, death, and storm counts.