Toxrill, the Corrosive (Promo Pack) [Innistrad: Crimson Vow Promos] High-Speed Riders if you attacked with creatures

if you attacked with creatures with total power 6 or greater this combat

{T}: Copy target permanent spell you control

and the removed monster will be returned to the opponent's side of the field in the same batlle position during your second Standby Phase after activation

If the player does

Whenever Zur the Enchanter attacks

Toxrill, the Corrosive (Promo Pack) [Innistrad: Crimson Vow Promos] High-Speed Riders if you attacked with creaturesSet: Innistrad: Crimson Vow 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.