Polukranos, Unchained, Vigor, and Crystalline Crawler

Prerequisites

• Polukranos, Unchained on the battlefield
• Vigor on the battlefield
• Crystalline Crawler on the battlefield
• Polukranos has at least four +1/+1 counters on it
• available

Steps

1. Pay to have Polukranos fight Crystalline Crawler
2. Vigor prevents the damage, putting a +1/+1 counter on Polukranos and four +1/+1 counters on Crystalline Crawler
3. Remove three +1/+1 counters from Crystalline Crawler to add
4. Repeat

Results

• Infinite colored mana
• Infinitely large creatures