Vitamins - When the opponent's HP is drained (Absorb, Leech life, Drain Punch, etc) the user gains more HP. Like a big Root, without having to hold the item. OP fer shur.
Like Minded - If the opponent is the same type as the ability holder, Pokemon with ability's best stat is raised one level.
idk, just some OP stuff i've been thinking of. I'd really enjoy Vitamins or something like it. <3