Devastating Onslaught + Mana Geyser + Mnemonic Wall

Devastating Onslaught

Mana Geyser

Mnemonic Wall

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

This clever loop centers on the recursive synergy between Devastating Onslaught and Mnemonic Wall, provided your opponents control enough tapped lands to fuel Mana Geyser's explosive red mana generation. When Devastating Onslaught creates temporary token copies of Mnemonic Wall, their enter-the-battlefield abilities go to work by plucking the sorceries right back out of your graveyard and into your hand. Because you continuously recoup the exact spells needed to restart the cycle while netting extra mana along the way, you can repeat the process indefinitely to amass infinite death triggers, storm count, and hasty tokens.