Exchange of Words + Mutavault Combos

2 known combos featuring both cards in Commander

Draw the game Infinite ETB Infinite landfall triggers Infinite tapped creature tokens Infinite mana lands you control can produce

Combo 1 with Scute Swarm

Also requires: Scute Swarm Scute Swarm
Results: Draw the game · Infinite ETB · Infinite landfall triggers · Infinite tapped creature tokens
Steps
  1. Activate Mutavault's first ability by tapping it, adding {C}.
  2. Activate Mutavault's second ability by paying {1}, causing it to become a 2/2 creature that is still a land until end of turn.
  3. Cast Exchange of Words by paying {1}{U}{U}, exchanging the text boxes of Mutavault and Scute Swarm.
  4. Play a land.
  5. The land enters the battlefield, triggering Mutavault's Scute Swarm ability, creating a copy of Mutavault with its original text.
  6. Step 5 repeats in a mandatory loop unless interrupted, drawing the game.

Combo 2 with Ley Weaver

Also requires: Ley Weaver Ley Weaver
Results: Infinite mana lands you control can produce · Infinite untap of lands you control
Show steps
  1. Activate Mutavault's second ability by paying {1}, causing it to become a 2/2 creature with all creature types in addition to its other types.
  2. Cast Exchange of Words by paying {1}{U}{U}.
  3. When Exchange of Words enters the battlefield, it triggers, exchanging the text boxes of Ley Weaver and Mutavault.
  4. Activate Mutavault by tapping it, untapping itself and any other land you control.
  5. Repeat step 4.
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