Cheapest priced copy (Unfinity): $0.35 at Card Kingdom, near mint, their price list as of .
Aerialephant 
Creature — Elephant Performer · 3/2 · Common · Unfinity · #2
Flying
When Aerialephant enters, you get {TK}, then you may put a sticker on a nonland permanent you own.
Legal inCommander
Banned inLegacyVintagePauper
Not legal inBrawlStandardPioneerModern