Gilder Bairn, Agatha's Soul Cauldron, and The Legend of Kyoshi // Avatar Kyoshi

Prerequisites

• Gilder Bairn in exile
• Agatha's Soul Cauldron on the battlefield
• The Legend of Kyoshi // Avatar Kyoshi on the battlefield

Steps

1. Activate Avatar Kyoshi by tapping it, adding at least six or Activate Avatar Kyoshi using Gilder Bairn's ability by paying and untapping it, doubling the counters on target permanent
2. Repeat

Results

• Infinite colored mana
• Infinite proliferate