Guildless Commons + PuPu UFO + Elven Raft-Steerer

Guildless Commons

PuPu UFO

Elven Raft-Steerer

How it works

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