I like the surprise effect a lot. I think the game was needing that. But I dont think this will be so OP most times, even why, or you are going to add 1-2 of these to a deck, and maybe you wont draw then at the prope time, or you will add up to 6, and will need to remove other useful cards. And for what? Making your Oty eat a creature like a Mind Flayer? Well, if you play it with a quint, or play a fire bolt in the bad creature, the effect is the same, not that powerfull.
The main effect is surely removing the skill cost, but most skills just cost 1 quanta, so a pillar would do the same effect (without a cost of 3 generic quanta). This is effective to skills that are expensive, like 3 quanta. Ohhh, flying Eternity + quint + SoR... how many cards to just eliminate that 3 Time quanta cost? Of course the nymphs would have the biggest advantage, but they are very rare, and even in this case, think about having the shards in the deck, at cost of removing other good cards... Doesnt really seem very powerful to me.
I think it should stay at 0 cost.