Inalla, Archmage Ritualist + Skirk Prospector + Changeling Berserker

Inalla, Archmage Ritualist

Skirk Prospector

Changeling Berserker

How it works

1. Cast Changeling Berserker by paying 3.
2. Changeling Berserker enters the battlefield, triggering its champion ability and Inalla.
3. Resolve the Inalla trigger, causing you to pay 1 to create a token copy of Changeling Berserker with haste.
4. The token Changeling Berserker enters the battlefield, championing the nontoken Changeling Berserker.
5. The nontoken Changeling Berserker leaves the battlefield, returning nothing from exile to the battlefield.
6. Resolve the nontoken Changeling Berserker trigger from step 2, choosing not to exile anything.
7. Activate Skirk Prospector by sacrificing the Mistbind Clique token, adding at least C.
8. The Changeling Berserker token leaves the battlefield, returning the nontoken Changeling Berserker from exile to the battlefield.
9. Repeat from step 2.