Kaya's Ghostform + Phyrexian Altar + Coati Scavenger

Kaya's Ghostform

Phyrexian Altar

Coati Scavenger

How it works

1. Activate Phyrexian Altar by sacrificing Coati Scavenger, adding .
2. When Coati Scavenger dies, Kaya's Ghostform triggers, returning Coati Scavenger from your graveyard to the battlefield.
3. When Coati Scavenger enters the battlefield, it triggers, returning Kaya's Ghostform from your graveyard to your hand.
4. Cast Kaya's Ghostform by paying , attaching it to Coati Scavenger.
5. Repeat.

This loop turns a simple sacrifice into a perpetual motion machine by continuously recycling its own pieces. When you feed Coati Scavenger to Phyrexian Altar, Kaya's Ghostform immediately steps in to rescue the creature from the graveyard while simultaneously refunding the mana used to cast it. Meanwhile, Coati Scavenger's own descend ability triggers upon re-entering the battlefield to pluck Kaya's Ghostform right back out of the graveyard and back into your hand, setting up the exact same re-attachment. By chaining these triggers together, you generate an endless cascade of sacrifice, death, and enter-the-battlefield triggers along with an infinite storm count.