Fever Charm is a common Instant card from Onslaught (ONS), collector number 202. Current market price: $0.10 (foil $0.78), TCGplayer market prices via Scryfall.
Choose one — • Target creature gains haste until end of turn. • Target creature gets +2/+0 until end of turn. • Fever Charm deals 3 damage to target Wizard creature.