Iridescent Drake + Shade's Form + Ashaya, Soul of the Wild + Zuran Orb

Iridescent Drake

Shade's Form

Ashaya, Soul of the Wild

Zuran Orb

How it works

1. Activate Zuran Orb 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 Zuran Orb ability from step 1, causing you to gain 2 life.
5. Repeat.

This clever loop relies on Ashaya, Soul of the Wild to turn your creatures into lands, making Iridescent Drake a valid sacrifice target for Zuran Orb. When the Drake hits the graveyard, Shade's Form triggers to bring it right back to the battlefield. That new entry triggers the Drake's own ability, snatching Shade's Form back out of the graveyard and attaching it once more so the cycle can begin anew.