I must say i don`t like idea of shards. First thing is they don`t belong to any elment so rainbows are favoured by implementing them and I don`t think this is something we really need. But that`s not really a big deal, the worst is they are killing creativity. Almost every new deck posted on forum contains at least one (usually more) kind of shard. I have a feeling that community members don`t try to develop new strategies and combos anymore but focus on attempts at fitting shards in every possible deck.