Llanowar Scout + Selesnya Sanctuary + Elven Raft-Steerer

Llanowar Scout

Selesnya Sanctuary

Elven Raft-Steerer

How it works

1. Activate Llanowar Scout by tapping it, putting Selesnya Sanctuary from your hand onto the battlefield.
2. When Selesnya Sanctuary enters the battlefield, it and Elven Raft-Steerer trigger.
3. Resolve the Selesnya Sanctuary trigger, returning itself from the battlefield to your hand.
4. Resolve the Elven Raft-Steerer trigger, untapping Llanowar Scout.
5. Repeat.