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.
Mana cost
2
G
U
Mana value
4
Printings
From
$0.47
EDHREC rank
#6830
Buy
Formats
Pioneer
Legal
Modern
Legal
Legacy
Legal
Vintage
Legal
Commander
Legal
Rulings
19 Nov 2021
Grolnok, the Omnivore's second ability exiles all permanent cards that are put into your graveyard from your library, not just those that you mill when a Frog you control attacks.
19 Nov 2021
Grolnok's last ability allows you to play lands and cast spells from among all cards you own in exile with croak counters on them, regardless of whether they were put there by the Grolnok that's currently on the battlefield or by an earlier incarnation.