Do keep in mind that with 50-50 odds per coin, MAXamar does 30 damage per turn on average, so if you plan to fight with Malamar EX, its probably best to use tools that let you reflip coins
100% it is possible, and it's possible to damage cards using any method if you are rough, but it is fully avoidable
Make sure that you redeem the active codes as soon as they are released, so that you dont miss out on the rewards
Healing Salve was the worst on this list, as gaining or preventing three life is not as good as, say producing three mana, just outright making your creature +3/+3, killing a creature/dealing damage, or drawing three cards
The goal is to enjoy multiple shiny patterns, complete Pokmon sets, compare finishes and build beautiful binder pages