Chain of Smog + Zaffai, Thunder Conductor

Exhibition

Decks

How it works

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Cast Chain of Smog by paying , targeting yourself.
Zaffai triggers, causing you to scry 1.
Resolve Chain of Smog, causing you to discard two cards and copy Chain of Smog, targeting yourself.
Repeat from step 2.

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

1–2 · Exhibition & Core

Allowed in this bracket.

3 · Upgraded

Allowed in this bracket.

4–5 · Optimized & cEDH

All combos are allowed.