Grim Monolith + Kinnan, Bonder Prodigy + Spark Double

GU identity

Commander legal

The 3 combo pieces

• Grim Monolith
• Kinnan, Bonder Prodigy
• Spark Double

What must be in place

Spark Double is a copy of Kinnan.

How to execute it

1. Activate Grim Monolith's first ability by tapping it, adding {5}.
2. Activate Grim Monolith's last ability by paying {4}, untapping it.
3. Repeat.

What the combo produces

• Infinite colorless mana