Tideforce Elemental + Trench Behemoth + Llanowar Scout

Tideforce Elemental

Trench Behemoth

Llanowar Scout

How it works

1. Activate a land by tapping it, adding at least .
2. Activate Tideforce Elemental by paying and tapping it, untapping Llanowar Scout.
3. Activate Trench Behemoth by returning the land from the battlefield to your hand, untapping it.
4. Activate Llanowar Scout by tapping it, putting the land from your hand to the battlefield.
5. When the land enters the battlefield, Tideforce Elemental triggers, untapping it.
6. Repeat.