Invasion of Vrynn: Four mana for this many cards is pretty standard, and getting a one-shot copy effect on the other side is tasty
Inigo, Avenging Swordsman (reskinned Samut, Voice of Dissent) Miracle Max, Unemployed (reskinned Marchesa, the Black Rose) Rodents of Unusual Size (reskinned Pack Rat) Silence (reprint) Battle of Wits (reprint) Vizzini, Criminal Mastermind (reskinned Baral, Chief of Compliance) Westley, Dread Pirate Roberts (reskinned Fynn, the Fangbearer) Fezzik, Rhyming Giant (reskinned Brion Stoutarm) Buttercup, Provincial Princess (reskinned Sisay, Weatherlight Captain) Evil Dead Secret Lair While The Princess Bride might not fit the spooky theme of this Super Drop, Evil Dead certainly does
If youre built around artifacts, a cheap one that cantrips is definitely something Id be after
Budget accordingly
Arlinn, the Pack's Hope can give you two Wolf tokens at a time with its minus ability
A bracket-two tournament is also a possibility, and its one a person could plausibly join by buying a precon (bracket one!) and some singles at the event