Retreat to Coralhelm + Oboro, Palace in the Clouds + Skyshroud Ranger

Retreat to Coralhelm

Oboro, Palace in the Clouds

Skyshroud Ranger

How it works

1. Activate Skyshroud Ranger by tapping it, putting Oboro from your hand onto the battlefield.
2. When Oboro enters the battlefield, Retreat to Coralhelm triggers, untapping Skyshroud Ranger.
3. Activate Oboro's first ability by tapping it, adding .
4. Activate Oboro's second ability by paying 1, returning it from the battlefield to your hand.
5. Repeat.