Asking the deep questions: Can you throw a potion at your monk friend, and have them deflect missile catch it, and then ki point redirect the 'attack' to throw the potion further on around the corner to your actual downed ally?
Hey, Larian... this kind of tomfoolery sounds right up your ally for silliness and fun... but... you know... we'd need a proper reaction system to allow players to do it... Hint hint...