c'mon guys, rly... not OP? why does than 50% of platinum decks have multiple copies of it? "It's simply a good card, not OP"
, right. So, to fight black hole effect, I need sanctuary, but if i play sanctuary, the SoF will destroy it - oh no!
. So for 7 quanta you get: 3 destroys (=6 quanta for explosions/ 6 quanta for upped pulvy/ 9 quanta for buterffly + initial 5 quanta to even play butterfly) and a black hole... hm, cheap. plus, no specifical element requred - it's a shard. Oh, but its a creature, and you can target creatures with 4 instance rage potion, and make SoF destroy even more than 3 permanents. And you can use creatures as cannon balls for catapults.
Now, recently the same story was with Shards of sacrifice. They were way much too strong for the rest of the game. So something had to be done, and purify got buffed. This is the new "Shard of sacrifice", a card that disbalanced the game, and in the next version it will get nerfed, or some other card will get buffed....