Cloudstone Curio + Death's Shadow + Phyrexian Altar + Life Finds a Way

Cloudstone Curio

Death's Shadow

Phyrexian Altar

Life Finds a Way

How it works

1. Cast Death's Shadow by paying .
2. When Death's Shadow enters the battlefield, Cloudstone Curio and Life Finds a Way trigger.
3. Resolve the Cloudstone Curio trigger, doing nothing.
4. Resolve the Life Finds a Way trigger, creating a copy of any nonartifact creature token you control.
5. When the creature token enters the battlefield, Cloudstone Curio triggers, returning Death's Shadow to your hand from the battlefield.
6. Activate Phyrexian Altar by sacrificing a creature token, adding .
7. Repeat.

This clever loop transforms cheap creatures and token generation into an engine of endless sacrifices and storm count. Because Death's Shadow enters as a 0/0 (or worse, depending on your life total) while still triggering Cloudstone Curio, it neatly satisfies the Curio's condition to bounce itself back to your hand using the mana generated by sacrificing a creature to Phyrexian Altar. Meanwhile, Life Finds a Way watches for these entries, capitalizing on power-matching nontoken arrivals to continually populate your board with fresh copies of your existing tokens.