Devastating Onslaught + Mana Geyser + Archaeomancer

Devastating Onslaught

Mana Geyser

Archaeomancer

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 Archaeomancer with haste.
3. When the Archaeomancer tokens enter, they trigger, returning Mana Geyser and Devastating Onslaught from your graveyard to your hand.
4. Repeat.

This potent loop hinges on leveraging Archaeomancer's enter-the-battlefield ability to continuously recycle your spells, provided you have enough opponents tapping lands to fuel the engine. When you cast Devastating Onslaught with enough resources gathered from Mana Geyser, you create a pair of Archaeomancer token copies that immediately pull both sorceries right back out of your graveyard and into your hand. Because Devastating Onslaught lets you scale the token generation to hit the threshold needed for Mana Geyser to net positive red mana, you can endlessly repeat the entire sequence to generate infinite mana, storm count, and hasty token copies.