Crackdown Construct, and Eater of the Dead

Prerequisites

• Crackdown Construct on the battlefield
• Eater of the Dead on the battlefield
• There is at least one creature card in a graveyard

Steps

1. Activate Eater of the Dead by paying , targeting any creature card in a graveyard
2. Crackdown Construct triggers, giving itself +1/+1 until end of turn
3. Repeat

Results

• Infinitely large Crackdown Construct until end of turn