Experiment Kraj, Gilder Bairn, and Biomancer's Familiar

Prerequisites

• Experiment Kraj on the battlefield
• Gilder Bairn on the battlefield
• Biomancer's Familiar on the battlefield
• plus enough to animate the land available

Steps

1. Use any of the listed land animators to turn a land that can produce or into a land creature and put at least one +1/+1 counter on it
2. Activate Experiment Kraj using that land's ability by tapping it, adding
3. Activate Experiment Kraj using Gilder Bairn's ability by paying and untapping it, doubling the counters on target permanent
4. Repeat from step 2

Results

• Infinite proliferate for permanents