Ratadrabik of Urborg + Leyline of Singularity + Crosis's Attendant

How it works

—

Activate Crosis's Attendant by paying and sacrificing it.
When Crosis's Attendant dies, Ratadrabik triggers, creating a token copy of Crosis's Attendant that is a 2/2 legendary Zombie in addition to its other types.
Repeat using the Crosis's Attendant token

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.