Tawnos, Solemn Survivor + Bounding Krasis + Krark-Clan Ironworks

Tawnos, Solemn Survivor

Bounding Krasis

Krark-Clan Ironworks

How it works

1. Activate Tawnos's second ability by paying 1, tapping it and sacrificing two artifact tokens, exiling Bounding Krasis from your graveyard and creating a token copy of it that is an artifact in addition to its other types.
2. When the Bounding Krasis token enters, it triggers, untapping Tawnos.
3. Activate Tawnos's first ability by paying 2 and tapping it, creating a copy of the Bounding Krasis token and causing you to mill two cards.
4. When the Bounding Krasis token enters, it triggers, untapping Tawnos.
5. Activate Krark-Clan Ironworks by sacrificing a Bounding Krasis token, adding CC.
6. Repeat from step 3.

This engine turns the graveyard into a cloning vat, using Tawnos, Solemn Survivor's second ability to resurrect Bounding Krasis as an artifact copy while fueled by the mana from Krark-Clan Ironworks. Once Bounding Krasis is on the battlefield, its enter-the-battlefield trigger untaps Tawnos, allowing Tawnos's first ability to continuously copy the Krasis token and mill your deck. Whenever you need to fuel the mana costs or clear space, Krark-Clan Ironworks readily sacrifices the extra tokens for colorless mana.