Malcolm, Keen-Eyed Navigator + Hedron Detonator + Stalactite Dagger

Decks

How it works

You have a way to cause an artifact to enter the battlefield under your control.

Cause an artifact to enter the battlefield under your control.
Hedron Detonator triggers, dealing 1 damage to each opponent.
Malcolm triggers, as Hedron Detonator is a Pirate due to Stalactite Dagger, creating a Treasure token for each opponent dealt damage this way.
When the Treasure(s) enter, Hedron Detonator triggers that many times.
Resolve the first Hedron Detonator trigger, dealing 1 damage to each opponent.
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.