Sensei's Divining Top + Elsha of the Infinite + Cheering Fanatic

Decks

How it works

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Declare Cheering Fanatic as an attacker. When it triggers, choose to name "Sensei's Divining Top".
Activate Sensei's Divining Top by tapping it, causing you to draw a card and put Sensei's Divining Top on top of your library.
Cast Sensei's Divining Top from the top of your library by paying .
Elsha's prowess ability triggers, giving it +1/+1 until end of turn
Repeat from step 2

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.