Gatta and Luzzu, Triskelion, and Shang-Chi, Martial Mentor

Prerequisites

• Gatta and Luzzu in hand
• Triskelion on the battlefield
• Shang-Chi, Martial Mentor on the battlefield
• available

Steps

1. Cast Gatta and Luzzu by paying
2. When Gatta and Luzzu enters the battlefield, it triggers, targeting Triskelion
3. Activate Triskelion by removing a +1/+1 counter from it, targeting itself, but instead putting two +1/+1 counters on it due to Gatta and Luzzu and Shang-Chi
4. Activate Triskelion by removing a +1/+1 counter from it, dealing 1 damage to any target
5. Repeat from step 3

Results

• Infinite +1/+1 counters on a creature
• Infinite damage