Mirran Safehouse, Griffin Canyon, and Mutavault

Prerequisites

• Mirran Safehouse on the battlefield
• Griffin Canyon in the graveyard
• Mutavault in the graveyard
• Mirran Safehouse does not have summoning sickness
• available

Steps

1. Activate Mirran Safehouse using Mutavault's second ability by paying , causing Mirran Safehouse to become a 2/2 creature with all creature types until end of turn
2. Activate Mirran Safehouse using Griffin Canyon's second ability by tapping it, untapping Mirran Safehouse and giving it +1/+1 until end of turn
3. Repeat step 2

Results

• Infinitely large Mirran Safehouse until end of turn