Gilder Bairn, Agatha's Soul Cauldron, and Wirewood Channeler

Prerequisites

• Gilder Bairn in exile
• Agatha's Soul Cauldron on the battlefield
• Wirewood Channeler on the battlefield

Steps

1. Activate Wirewood Channeler by tapping it, adding at least
2. Activate Wirewood Channeler using Gilder Bairn's ability by paying and untapping it, doubling the counters on target permanent
3. Repeat

Results

• Infinite colored mana
• Infinite proliferate