Gilder Bairn, Gemstone Array, and Karametra's Favor

Prerequisites

• Gilder Bairn on the battlefield
• Gemstone Array on the battlefield
• Karametra's Favor on the battlefield

Steps

1. Activate Gilder Bairn using its ability from Karametra's Favor by tapping it, adding one mana
2. Activate Gilder Bairn by paying and untapping it, doubling each counter on Gemstone Array
3. Activate Gemstone Array as many times as necessary by removing counters from it, adding at least two mana
4. Repeat from step 2
5. Once you have infinite counters on Gemstone Array, you may instead double the counters on any other permanents

Results

• Infinite charge counters on a permanent
• Infinite colored mana
• Infinite proliferate for permanents