Queza, Augur of Agonies + Intimidation Campaign + Mind Over Matter + Chromatic Orrery

Exhibition

How it works

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Activate Chromatic Orrery's first ability by tapping it, adding .
Cast Intimidation Campaign by paying .
When Intimidation Campaign enters the battlefield, its first ability triggers, causing each opponent to lose 1 life, and you to gain 1 life and draw a card.
Queza triggers, targeting an opponent.
When you commit that crime, Intimidation Campaign's second ability triggers, returning it from the battlefield to your hand.
Resolve the Queza trigger, causing an opponent to lose 1 life and you to gain 1 life.
If you have less than available, activate Mind Over Matter by discarding a card, untapping Chromatic Orrery.
If Chromatic Orrery is untapped, activate Chromatic Orrery's first ability by tapping it, adding .
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.