Requires

Revolutionist must be on the battlefield. Twinflame must be in hand. Catalyst Elemental must be on the battlefield. Reverberate must be in hand. Mana needed:

Steps

1. Cast Twinflame with Strive by paying , targeting Revolutionist and Catalyst Elemental.
2. Holding priority, cast Reverberate by paying , creating a copy of Twinflame.
3. Resolve the Twinflame copy, creating a token copy of Revolutionist and Catalyst Elemental.
4. Revolutionist enters the battlefield triggers, returning Reverberate from your graveyard to hand.
5. Holding priority, activate Catalyst Elemental by sacrificing it, adding .
6. Repeat from step 2.

Results