Gilder Bairn, Karametra's Favor, and Training Grounds

Prerequisites

• Gilder Bairn on the battlefield
• Karametra's Favor on the battlefield
• Training Grounds on the battlefield
• Karametra's Favor attached to Gilder Bairn
• Gilder Bairn does not have summoning sickness

Steps

1. Activate Gilder Bairn by tapping it, adding
2. Activate Gilder Bairn by paying and untapping it, doubling each counter on target permanent
3. Repeat

Results

• Infinite proliferate