Manascape Refractor, Mutavault, and Griffin Canyon

Prerequisites

• Manascape Refractor on the battlefield
• Mutavault on the battlefield
• Griffin Canyon on the battlefield
• Manascape Refractor does not have summoning sickness
• available

Steps

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

Results

• Infinitely large Manascape Refractor until end of turn