Healing in general is usually overlooked, IMO. Oddly enough, I've seen strong decks at Battle Roads use Potions + Junk Arm for major prize denial! In the long run, though, I still think it's merely a minor setback against Decks that can deal huuuge amounts of damage 1 turn, like Zekrom EX or Reshiram EX, or even Donchamp (kehehehe, my personal favorite *flexy flex*)!
I think Moomoo Milk might actually have better potential. YES, its flippy, but two flips are a very high chance of getting one heads anyway, so why not?