Salvaging Station + Krark-Clan Ironworks + Retrofitter Foundry

Salvaging Station

Krark-Clan Ironworks

Retrofitter Foundry

How it works

1. Activate Retrofitter Foundry's ability to create a servo token.
2. Sacrifice Retrofitter Foundry to Krark-Clan Ironworks adding CC to your mana pool.
3. Activate Salvaging Station to return Retrofitter Foundry to the battlefield.
4. Sacrifice the Servo token to Krark-Clan Ironworks adding CC to your mana pool.
5. Repeat.