Leonardo, Worldly Warrior + Phyrexian Altar + Blessed Sanctuary + Genesis Chamber

Leonardo, Worldly Warrior

Phyrexian Altar

Blessed Sanctuary

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. When Leonardo enters, Blessed Sanctuary and Genesis Chamber trigger, creating two creature tokens.
3. Activate Phyrexian Altar by sacrificing Leonardo, adding .
4. Put Leonardo into the command zone from your graveyard.
5. Repeat.

This clever loop leverages Leonardo, Worldly Warrior's affinity for creatures to make casting your commander practically free, letting you repeatedly pour it into Phyrexian Altar to churn through the command zone. As Leonardo enters the battlefield, Genesis Chamber and Blessed Sanctuary swing into action, replacing your commander with a pair of creature tokens that immediately fuel the affinity discount for the next iteration. Phyrexian Altar turns this sacrificial recycling into a steady stream of mana while simultaneously feeding your death and sacrifice triggers.