Synchronized Spellcraft is a common Instant card from Zendikar Rising (ZNR), collector number 168. Current market price: $0.05 (foil $0.02), TCGplayer market prices via Scryfall.
Synchronized Spellcraft deals 4 damage to target creature and X damage to that creature's controller, where X is the number of creatures in your party. (Your party consists of up to one each of Cleric, Rogue, Warrior, and Wizard.)