Grolnok, the Omnivore [Innistrad: Crimson Vow Prerelease Promos] Elemental Horse Set: Modern Masters 2015 Type:

Set: Modern Masters 2015 Type: Creature — Elf Knight Rarity: Rare Cost: {1}{G/W}{G/W}{G/W} Other green creatures you control get +1/+1

Those who know the alleys and sewers of the Erdwal can disappear like smoke

Set: Unlimited Edition Type: Creature — Skeleton Rarity: Common Cost: {1}{B} {B}: Regenerate Drudge Skeletons

and an opponent may gain control of a creature you control of their choice for as long as Infernal Denizen remains on the battlefield

Grolnok, the Omnivore [Innistrad: Crimson Vow Prerelease Promos] Elemental Horse Set: Modern Masters 2015 Type:Set: Innistrad: Crimson Vow Prerelease Promos Type: Legendary Creature Frog Rarity: Rare Cost: {2}{G}{U} 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.