Blossoming Tortoise, Draconic Destiny, and Mutavault

Prerequisites

• Blossoming Tortoise on the battlefield
• Draconic Destiny in hand
• Mutavault on the battlefield
• available

Steps

1. Activate Mutavault's second ability by paying due to Blossoming Tortoise, causing Mutavault to become a 2/2 creature with all creature types until end of turn
2. Cast Draconic Destiny by paying , attaching it to Mutavault
3. Activate Mutavault by paying due to Blossoming Tortoise, giving it +1/+0 until end of turn
4. Repeat step 3

Results

• Infinitely powerful Mutavault until end of turn