Time Sieve + Tamiyo's Journal + Academy Manufactor + Glasspool Mimic // Glasspool Shore

Ruthless

Decks

How it works

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At the beginning of your upkeep, Tamiyo's Journal triggers, creating three Food, three Clue, and three Treasure tokens.
Activate Time Sieve by tapping it and sacrificing five artifacts, causing you to take an extra turn after this one.
Repeat each turn.

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

1–2 · Exhibition & Core

Spellbook classifies this as Ruthless — not for these brackets.

3 · Upgraded

Spellbook classifies this as Ruthless — not for these brackets.

4–5 · Optimized & cEDH

All combos are allowed.