Blossoming Tortoise, Crackdown Construct, and Blinkmoth Nexus

Prerequisites

• Blossoming Tortoise on the battlefield
• Crackdown Construct on the battlefield
• Blinkmoth Nexus on the battlefield

Steps

1. Activate Blinkmoth Nexus's second ability by paying , causing it to become a 1/1 Blinkmoth creature in addition to its other types until end of turn
2. Activate Blinkmoth Nexus's second ability by paying
3. Crackdown Construct triggers, giving itself +1/+1 until end of turn
4. Repeat from step 2

Results

• Infinitely large Crackdown Construct until end of turn