Clown Car + Salvaging Station + Battered Golem + Krark-Clan Ironworks

Clown Car

Salvaging Station

Battered Golem

Krark-Clan Ironworks

How it works

1. Activate Salvaging Station by tapping it, returning Clown Car from your graveyard to the battlefield.
2. Clown Car enters the battlefield, triggering Battered Golem, untapping Battered Golem.
3. Activate Clown Car's crew ability by tapping Battered Golem, causing Clown Car to become an artifact creature until end of turn.
4. Activate Krark-Clan Ironworks by sacrificing Clown Car, adding CC.
5. Clown Car dies, triggering Salvaging Station, untapping Salvaging Station.
6. Repeat.