Experiment Kraj + Gilder Bairn + Overgrown Battlement

GU identity

Commander legal

The 3 combo pieces

• Experiment Kraj
• Gilder Bairn
• Overgrown Battlement

What must be in place

You control at least three creatures with defender.

How to execute it

1. Activate Experiment Kraj using Overgrown Battlement's ability by tapping it, adding at least {G}{G}{G}.
2. Activate Experiment Kraj using Gilder Bairn's ability by paying {2}{G/U} and untapping it, doubling each counter on target permanent.
3. Repeat.

What the combo produces

• Infinite green mana
• Infinite proliferate