Use Mutagen

Drink a mutagen as an action, you gain a +1 bonus to your AC and gain advantage on all Strength, Dexterity, and Constitution ability checks for 10 minutes. You also gain disadvantage on all Intelligence, Wisdom, and Charisma ability checks for the duration as well. You can only be under the effects of one mutagen at a time. Attempting to drink a second mutagen cancels out both mutagens and gives you two levels of exhaustion.