Devastating Onslaught + Mana Geyser + Revolutionist

Devastating Onslaught

Mana Geyser

Revolutionist

How it works

1. Cast Mana Geyser by paying 3, adding for each tapped land your opponents control.
2. Cast Devastating Onslaught by paying 4, creating two token copies of Revolutionist with haste.
3. When the Revolutionist tokens enter, they trigger, returning Mana Geyser and Devastating Onslaught from your graveyard to your hand.
4. Repeat.

This explosive loop relies on a critical mass of opponents' tapped lands to fuel Mana Geyser, generating enough red mana to repeatedly cast Devastating Onslaught. By targeting your Revolutionist with the onslaught, the resulting token copies enter the battlefield and trigger their ability to pull both Mana Geyser and Devastating Onslaught right back out of your graveyard and into your hand. Because the tokens are sacrificed at the end step, you can safely rinse and repeat this sequence as long as your mana pool can support it, netting endless triggers, a massive storm count, and an overwhelming army of hasty copycats.