Biovisionary + Mnemonic Deluge + Multiversal Incursion

How it works

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Cast Mnemonic Deluge by paying , exiling Multiversal Incursion and casting three copies of it without paying their mana costs.
Resolve the three Multiversal Incursion copies, creating three token copies of Biovisionary.
At the beginning of your end step, each Biovisionary you control triggers.
Resolve the first trigger, causing you to win the game.

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.