
Whenever a Frog you control attacks, mill three cards.
Whenever a permanent card is put into your graveyard from your library, exile it with a croak counter on it.
You may play lands and cast spells from among cards you own in exile with croak counters on them.
Grolnok, the Omnivore has 4 printings, first in Innistrad: Crimson Vow (2021). EDHREC ranks it #7,013 among Commander cards. It appears most in Glarb, Calamity's Augur decks (4,769 on EDHREC). It has 2 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.