Gilder Bairn, Crystalline Crawler, and Inga and Esika

Prerequisites

• Gilder Bairn on the battlefield
• Crystalline Crawler on the battlefield
• Inga and Esika on the battlefield

Steps

1. Activate Inga and Esika by tapping Gilder Bairn, producing its effect
2. Activate Gilder Bairn by paying and untapping it, doubling each counter on Crystalline Crawler
3. Activate Crystalline Crawler as many times as necessary by removing counters from it, adding at least three mana
4. Repeat from step 2
5. Once you have infinite counters on Crystalline Crawler, you may instead double the counters on any other permanents

Results

• Infinite colored mana
• Infinite proliferate for permanents
• Infinite +1/+1 counters on a creature