Enlarge / Reduce

Casting Time: 1 action - Range: 30 feet - Components: V, S, M (a pinch of powdered iron) - Duration: Concentration, up to 1 minute
Target a creature or an object. Unwilling creature can make a constitution save to negate.
Choose one: Enlarge: Size doubles growing one size category. Advantage on strength checks and saves. Attacks deal an extra 1d4 damage.
Reduce: Size halves, shrinking by one category. Disadvantage in strength checks and saves. Attacks deal 1d4 less damage.