Brinelin, the Moon Kraken + Displacer Kitten + Sol Ring + Mana Vault

Powerful

Decks

How it works

—

Activate Sol Ring by tapping it, adding .
Cast Mana Vault by paying .
Displacer Kitten triggers, blinking Brinelin.
When Brinelin enters the battlefield, it triggers, returning Sol Ring from the battlefield to your hand.
Activate Mana Vault by tapping it, adding .
Cast Sol Ring by paying .
Displacer Kitten triggers, blinking Brinelin.
When Brinelin enters the battlefield, it triggers, returning Mana Vault from the battlefield to your hand.
Repeat.

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

1–2 · Exhibition & Core

Spellbook classifies this as Powerful — not for these brackets.

3 · Upgraded

Allowed in this bracket.

4–5 · Optimized & cEDH

All combos are allowed.