Kolodin, Triumph Caster + Salvaging Station + Grinding Station + Clown Car

Kolodin, Triumph Caster

Salvaging Station

Grinding Station

Clown Car

How it works

1. Activate Salvaging Station by tapping it, returning Clown Car from your graveyard to the battlefield.
2. When Clown Car enters, Grinding Station and Kolodin trigger.
3. Resolve the Grinding Station trigger, untapping it.
4. Resolve the Kolodin trigger, causing Clown Car to become an artifact creature until end of turn.
5. Activate Grinding Station by tapping it and sacrificing Clown Car.
6. When Clown Car dies, Salvaging Station triggers, untapping Salvaging Station.
7. Resolve the Grinding Station ability.
8. Repeat.