Paleoloth + Bloodspore Thrinax + Wild Cantor + Reckless Barbarian

Paleoloth

Bloodspore Thrinax

Wild Cantor

Reckless Barbarian

How it works

1. Activate Reckless Barbarian by sacrificing it, adding .
2. Cast Wild Cantor by paying R/G.
3. Wild Cantor enters the battlefield, triggering Paleoloth, returning Reckless Barbarian from your graveyard to your hand.
4. Activate Wild Cantor by sacrificing itself, adding 1.
5. Cast Reckless Barbarian by paying 1.
6. Reckless Barbarian enters the battlefield, triggering Paleoloth, returning Wild Cantor from your graveyard to your hand.
7. Repeat.