Retreat to Coralhelm + Skyshroud Ranger + Trench Behemoth

GU identity

Commander legal

The 3 combo pieces

• Retreat to Coralhelm
• Skyshroud Ranger
• Trench Behemoth

How to execute it

1. Activate Trench Behemoth by returning a land from the battlefield to your hand, untapping Trench Behemoth.
2. Activate Skyshroud Ranger by tapping it, putting the land from your hand onto the battlefield.
3. When the land enters the battlefield, Retreat to Coralhelm triggers, untapping Skyshroud Ranger.
4. If the land enters untapped and can produce mana, you may activate it by tapping it, adding at least {1}.
5. Repeat.

What the combo produces

• Infinite landfall triggers
• Infinite mana lands you control that enter the battlefield untapped can produce