Crackdown Construct, and Puresteel Paladin

Prerequisites

• Crackdown Construct on the battlefield
• Puresteel Paladin on the battlefield
• You control an Equipment
• You control at least three artifacts

Steps

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

Results

• Infinitely large Crackdown Construct until end of turn