Kog'Maw, Arcanist Familiar

Partner with Zoe, Arcanist Prodigy (When this
creature enters the battlefield, target player may put
Zoe, Arcanist Prodigy into their hand from their
library, then shuffle.)
Whenever you cast a noncreature spell, put a
+1/+1 counter on Kog'Maw, Arcanist Familiar.
Remove two +1/+1 counters from Kog'Maw,
Arcanist Familiar: Add {r}.