Greater Mossdog is a common Creature — Plant Dog card from Duel Decks: Izzet vs. Golgari (DDJ), collector number 59. Current market price: $0.05, TCGplayer market prices via Scryfall.
Dredge 3 (If you would draw a card, you may mill three cards instead. If you do, return this card from your graveyard to your hand.)