Crackdown Construct, and Martyrdom

Prerequisites

• Crackdown Construct on the battlefield
• Martyrdom in hand
• available

Steps

1. Cast Martyrdom by paying , targeting any creature you control
2. Activate the creature 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