Crackdown Construct, and Bludgeon Brawl

Prerequisites

• Crackdown Construct on the battlefield
• Bludgeon Brawl on the battlefield

Steps

1. Activate the zero-cost artifact's equip ability by paying , targeting Crackdown Construct
2. Crackdown Construct triggers, giving itself +1/+1 until end of turn
3. Resolve the equip ability, attaching the artifact to Crackdown Construct
4. Repeat

Results

• Infinitely large Crackdown Construct until end of turn