Abdel Adrian, Gorion's Ward + Felidar Guardian + Eldrazi Confluence

Decks

How it works

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Cast Abdel Adrian either from your hand or from the command zone by paying and commander tax, if applicable.
When Abdel Adrian enters the battlefield, it triggers, exiling Felidar Guardian until Abedl Adrian leaves the battlefield and creating a 1/1 Soldier creature token.
Cast Eldrazi Confluence by paying its mana cost, blinking Abdel Adrian.
Abdel Adrian leaves and enters the battlefield, causing Felidar Guardian to return to the battlefield from exile, and triggering Abdel Adrian and Felidar Guardian's enter abilities.
Resolve the Abdel Adrian trigger, exiling Felidar Guardian until Abdel Adrian leaves the battlefield and creating a 1/1 Soldier creature token.
Resolve the Felidar Guardian trigger, blinking Abdel Adrian.
Repeat from step 4.

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.