Requires

Jirina Kudro must be in the command zone. Mana Echoes must be on the battlefield. Phyrexian Altar must be on the battlefield. Jirina Kudro must be your commander. Mana needed: plus enough mana to pay for commander tax, if applicable, or an additional , or if you haven't cast Jirina from the command zone this game

Steps

1. Cast Jirina from the command zone by paying plus commander tax, if applicable.
2. When Jirina enters the battlefield, it and Mana Echoes trigger.
3. Resolve the Jirina trigger, creating a 1/1 Human Soldier creature token for each time you've cast Jirina from the command zone this game.
4. When the Human Soldiers enter the battlefield, Mana Echoes triggers that many times.
5. Resolve the first Mana Echoes trigger, adding for each Human and Soldier you control.
6. Repeat step 5 for each remaining Mana Echoes trigger created in steps 2 and 4.
7. Activate Phyrexian Altar twice by sacrificing Jirina and a Human Soldier, adding .
8. Choose to return Jirina to the command zone from your graveyard.
9. If you control a Human Soldier, activate Phyrexian Altar by sacrificing a Human Soldier, adding .
10. Repeat.

Results