Tawnos, Solemn Survivor + Ashnod's Altar + Deceiver Exarch

Decks

How it works

Activate Tawnos's second ability by paying , tapping it and sacrificing two artifact tokens, exiling Deceiver Exarch from your graveyard and creating a token copy of it that is an artifact in addition to its other types.
When the Deceiver Exarch token enters, it triggers, untapping Tawnos.
Activate Tawnos's first ability by paying and tapping it, creating a copy of the Deceiver Exarch token and causing you to mill two cards.
When the Deceiver Exarch token enters, it triggers, untapping Tawnos.
Activate Ashnod's Altar by sacrificing a Deceiver Exarch 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.