Requires

Isochron Scepter must be on the battlefield. Roar of the Kha must be in exile (exiled by Isochron Scepter). Tezzeret, Agent of Bolas must be on the battlefield. You control creatures that can tap to produce at least .

Steps

1. Activate Tezzeret's second loyalty ability by removing a loyalty counter on it, causing Isochron Scepter to become an artifact creature until end of turn.
2. Activate creatures you control by tapping those, adding at least .
3. Activate Isochron Scepter by paying and tapping it, casting a copy of Roar of the Kha without paying its mana cost, untapping all creatures.
4. Repeat from step 2.

Results