Crystalline Crawler, and Evolution Vat

Prerequisites

• Crystalline Crawler on the battlefield
• Evolution Vat on the battlefield
• Crystalline Crawler has at least four +1/+1 counters on it
• available

Steps

1. Activate Evolution Vat by paying and tapping it, targeting Crystalline Crawler and putting a +1/+1 counter on it
2. Activate Crystalline Crawler by paying , doubling the number of +1/+1 counters on it
3. Activate Crystalline Crawler's first ability four times by removing four +1/+1 counters from it, adding
4. Repeat from step 2

Results

• Infinite +1/+1 counters on Crystalline Crawler
• Infinite colored mana