Chain Lightning, Crystalline Crawler, and Vigor

Prerequisites

• Chain Lightning in hand
• Crystalline Crawler on the battlefield
• Vigor on the battlefield
• available

Steps

1. Cast Chain Lightning by paying , targeting Crystalline Crawler
2. Resolve Chain Lightning, putting three +1/+1 counters on Crystalline Crawler due to Vigor and choosing to pay to create a copy of Chain Lightning targeting Crystalline Crawler
3. Holding priority, activate Crystalline Crawler's first ability twice by removing two +1/+1 counters from it, adding
4. Repeat from step 2

Results

• Infinite +1/+1 counters
• Infinite colored mana
• Infinite magecraft triggers
• Infinite storm count