Crackling Spellslinger is a rare Creature — Human Wizard card from Outlaws of Thunder Junction Commander (OTC), collector number 25. Current market price: $1.14, TCGplayer market prices via Scryfall.
Flash When this creature enters, if you cast it, the next instant or sorcery spell you cast this turn has storm. (When you cast that spell, copy it for each spell cast before it this turn. You may choose new targets for the copies.)