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 [Innistrad: Double Feature]](http://tothetablebgc.myshopify.com/cdn/shop/files/df0b444e-6128-4257-b8f9-3567ca9580c0.png?v=1776397989&width=1445)
