Squee, the Immortal + Food Chain

Ruthless

34,765

Decks

How it works

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Activate Food Chain by exiling Squee, adding that can only be spent to cast creature spells.
Cast Squee from exile by paying .
Repeat.

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

1–2 · Exhibition & Core

Spellbook classifies this as Ruthless — not for these brackets.

3 · Upgraded

Spellbook classifies this as Ruthless — not for these brackets.

4–5 · Optimized & cEDH

All combos are allowed.