Experiment Kraj, Gilder Bairn, and Incubation Druid

Prerequisites

• Experiment Kraj on the battlefield
• Gilder Bairn on the battlefield
• Incubation Druid on the battlefield

Steps

1. Activate Experiment Kraj using Incubation Druid's ability by tapping it, adding
2. Activate Experiment Kraj using Gilder Bairn's ability by paying and untapping it, doubling each counter on target permanent
3. Repeat

Results

• Infinite proliferate