Urza, Lord High Artificer, Farmstead Gleaner, and Forensic Gadgeteer

Prerequisites

• Urza, Lord High Artificer on the battlefield
• Farmstead Gleaner on the battlefield
• Forensic Gadgeteer on the battlefield

Steps

1. Activate Urza's first ability by tapping Farmstead Gleaner, adding
2. Activate Farmstead Gleaner by paying and untapping it, putting a +1/+1 counter on it
3. Repeat

Results

• Infinite +1/+1 counters on Farmstead Gleaner