Toxrill, the Corrosive [Innistrad: Crimson Vow Prerelease Promos] Former Navy Set: Wizards of the Coast:

Set: Wizards of the Coast: Black Star Promos Type: Fire Rarity: Black Star Promo Retreat cost: Colorless

They remain paired for as long as you control both of them

"I now believe the strange orb was some kind of Thran security device

When the Mirran resistance arrived

create two tokens that are copies of target noncreature permanent

Toxrill, the Corrosive [Innistrad: Crimson Vow Prerelease Promos] Former Navy Set: Wizards of the Coast:Set: Innistrad: Crimson Vow Prerelease Promos Type: Legendary Creature Slug Horror Rarity: Mythic Cost: {5}{B}{B} At the beginning of each end step, put a slime counter on each creature you don't control. Creatures you don't control get 1 1 for each slime counter on them. Whenever a creature you don't control with a slime counter on it dies, create a 1 1 black Slug creature token. {U}{B}, Sacrifice a Slug: Draw a card.