Devastating Onslaught + Mana Geyser + Mnemonic Wall

Mana needed: {3}{R}{R}

UR identity

Commander legal

The 3 combo pieces

What must be in place

Opponents control at least ten tapped lands.

How to execute it

  1. Cast Mana Geyser by paying {3}{R}{R}, adding {R} for each tapped land your opponents control.
  2. Cast Devastating Onslaught by paying {4}{R}, 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.

What the combo produces