Toxrill, the Corrosive (Showcase Eternal Night) [Innistrad: Crimson Vow] DP13 where X is the number

where X is the number of Dragons you control

Set: Hour of Devastation Prerelease Promos Type: Sorcery Rarity: Rare Cost: {X}{B}{B} Repeat the following process X times

Najib retreated to his castle at El-Abar

Set: Collectors' Edition Type: Enchantment Rarity: Rare Cost: {1}{U} Players skip their untap steps

Set: Khans of Tarkir Prerelease Promos Type: Enchantment Rarity: Rare Cost: {R}{W}{B} Whenever a nontoken creature you control attacks

Toxrill, the Corrosive (Showcase Eternal Night) [Innistrad: Crimson Vow] DP13 where X is the numberSet: Innistrad: Crimson Vow 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.