On top of Legion Lieutenant, Captivating Vampire, Stromkirk Captain, and Vampire Nocturnus, we also have many ways built into our creatures to generate +1/+1 counters: Indulgent Aristocrat, Cordial Vampire, Metallic Mimic, Drana, Liberator of Malakir, Patron of the Vein, and Cathars Crusade
Until end of turn, it gains If this creature would leave the battlefield, exile it instead of putting it anywhere else and When this creature is put into exile, create a 4/4 blue and red Elemental creature token
As an Enhanced Expansion Pack with limited initial print runs, long-term supply will tighten as sealed product gets opened
Stock Up is a Sorcery card in Magic: the Gathering MTG
Given that English cards almost always sell for more than those in other languages, I think a price tag of $8-10 makes sense for this new promo