After quite a bit of thought, I think the card is probably balanced. This card goes well with quanta denial. It gives you a small amount of card advantage, but the quanta cost is on your opponent instead of on you (as with hourglass). It is probably important to keep the card expensive because getting it out before your opponent can play most of his starting hand would be very strong. If it turns out to be UP, then I think you should bump it up to 30%, but keep the cost the same.
It would be challenging to make a deck using this card. It goes well with CC, PC, sundial, and shard of bravery. You might want to only have 1 in your deck ever just to avoid the chance of drawing 2 in your opening hand.