Tawnos, Solemn Survivor + Krark-Clan Ironworks + Breaching Hippocamp

Decks

How it works

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

In which brackets is this combo allowed, per Spellbook's Spicy tier?

1–2 · Exhibition & Core

Spellbook classifies this as Spicy — not for these brackets.

3 · Upgraded

Allowed in this bracket.

4–5 · Optimized & cEDH

All combos are allowed.