Iridescent Drake + Shade's Form + Carrion Feeder

Iridescent Drake

Shade's Form

Carrion Feeder

How it works

1. Activate Carrion Feeder by sacrificing Iridescent Drake.
2. When Iridescent Drake dies, Shade's Form triggers, returning Iridescent Drake from your graveyard to the battlefield.
3. When Iridescent Drake enters the battlefield, it triggers, returning Shade's Form from your graveyard to the battlefield attached to Iridescent Drake.
4. Resolve the Carrion Feeder ability from step 1, putting a +1/+1 counter on it.
5. Repeat.

This clever loop relies on a self-sustaining cycle of sacrifice and resurrection: you use Carrion Feeder to sacrifice Iridescent Drake, which triggers Shade's Form's ability to return the Drake straight back to the battlefield. As Iridescent Drake enters, its own triggered ability plucks Shade's Form right back out of the graveyard to re-enchant it, setting the stage to repeat the entire process. Meanwhile, Carrion Feeder happily takes advantage of every single iteration, growing endlessly with infinite +1/+1 counters while triggering an infinite storm of deaths, enters-the-battlefield, and sacrifices.