Abyssal Might

You summon an evil energy from the Abyss to grant you physical prowess. You gain a 1d3+1 bonus to your Strength, Dexterity, and Constitution scores for the duration, but you must make at least one attack each turn. If the only creatures within range are allies, you will attack the nearest one. When the duration expires, you keep the extra hit points you gained from your increased Constitution score.