Dude, it's called strategy and learning to play the game. If you choose to use such options as Vampires and Shards for healing, you have to time your attacks so that the last hit will occur when you have FULL HEALTH. If you can't time it, don't complain. Thousands of players have used such healing decks, and they either have to time it or suck it up. It's a reason it's called "Elemental Mastery" and not "Elemental Apprenticeship." And yes, I have played a Rainbow deck that uses Shard of Gratitudes, too. Either I time my damage so that my Pulverizer does the last hit, or I use a heal spell. If I can't get EM, I suck it up.