Jinnie Fay, Jetmir's Second + Gemcutter Buccaneer + Maskwood Nexus

Decks

How it works

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Cast Gemcutter Buccaneer by paying .
When Gemcutter Buccaneer enters the battlefield, it triggers, creating a tapped 2/2 Cat or 3/1 Dog creature token due to Jinnie Fay.
When the Cat or Dog enters the battlefield as a Pirate due to Maskwood Nexus, Gemcutter Buccaneer triggers, creating a tapped 2/2 Cat or 3/1 Dog creature token due to Jinnie Fay.
Repeat 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.