Toxrill, the Corrosive - Innistrad: Double Feature (DBL) Blue As long as Necrotic Ooze

As long as Necrotic Ooze is on the battlefield

Trample Crew 2 (Tap any number of creatures you control with total power 2 or more: This Vehicle becomes an artifact creature until end of turn

elder of Gatstaf

[−3]: Create a green Treefolk creature token with reach and "This creature's power and toughness are each equal to the number of lands you control

you may search your library for an enchantment card

Toxrill, the Corrosive - Innistrad: Double Feature (DBL) Blue As long as Necrotic OozeAt 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.