Exchange of Words, Scute Swarm, and Mutavault

Prerequisites

• Exchange of Words in hand
• Scute Swarm on the battlefield
• Mutavault on the battlefield
• You have a land card in hand
• You control at least five lands
• available

Steps

1. Activate Mutavault's first ability by tapping it, adding
2. Activate Mutavault's second ability by paying , causing it to become a 2/2 creature that is still a land until end of turn
3. Cast Exchange of Words by paying , 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

Results

• Draw the game
• Infinite ETB
• Infinite landfall triggers
• Infinite tapped creature tokens