That goes too far. I'd rather just increase the ability cost to two upped.
I ask you, what deck were you using? I want to try it. And fighting top 50 isn't a good judge, since it's all rainbows really. I can make lots of decks that don't lose against top 50. So far, you can't judge a card based on how it operates in game since you're missing the one aspect where all the balancing should be focused on. It needs to be mostly theoretical.
And Mind Gate is equal in power to hourglass. Both grant you another card. Mind Gate has the advantage of you precoging your opponent's next card, and with more than one can get you guaranteed more copies of one card. On the other token, mind gate doesn't let you decide what your next card will be and is entirely dependent on what your opponent's deck is and sometimes getting the same card is a bad thing.
The fact that your opponent has such a large card advantage to start with is hard to overcome. Granted, you have your own cards too, but since your deck is focused on mind gate, it won't be as good at the start. Say your opponent gets a 7 card hand, and you play a mind gate on turn two. By then they have an 8 card advantage. For 2 more turns it goes like that until you play a second mind gate. For two turns after that, you deplete the card advantage they have by 1 per turn when you play a third mind gate. At which point it goes down by two per turn until you've neutralized their card advantage.
So it takes 9 turns to deplete the card advantage of their deck, and that's assuming you've drawn 3 mind gates by the time there's 18 cards left, which isn't likely.
As to it not countering decks with shards, shard decks lose to it because they rely on stalling, right? Well if it relies on stalling then you can wait those 9 turns it needs to take away that card advantage. And then you start being able to play their deck better than they can, making you the winnrar. Not to mention those shards DO let you have more healing, which is in effect a counter. If I have 10 shards and you have 4, I'm fairly certain I have the advantage.
Shard advantage doesnt mean its a counter to shards. Me drawing 3 of your cards isnt a counter to that card. If you're against deckout deck, and we both have enough healing to go to deckout, winner is the one with more cards, not the one with more shards.
As for deck I used, I cant give you the exact code now as I closed the trainer, and did few variations anyway. But you can as well make similar deck - basically stalling rainbow cards with some quantum towers and 2
towers + 6 Mind Gates (the deck works without
towers though too) + 2-3 Hourglasses. I did both quantum towers + aether mark and supernova, some q.towers with entropy mark.
As for comparison to Hourglass, I dont see them as the same power cards. I actually wouldnt compare their power level as I find those two very different.
Hourglass depletes your own cards. Mind gate brings cards from nowhere and it brings you as many copies you want up to your number of Gates. And its not like you're getting some random stupid cards. You're getting cards from sane, hopefully well made, deck. You get EVERY card from that deck once you get Gates up. Seeing how most good decks are either rainbow or redundant (mono/duo decks usually pack enough towers and up to 6 creatures), you'll get good playable cards even though your opponent already got several cards you wont see.
But why is it too much to put Gates to stasis? What is the point of this card in the first place? Being able to completely copy your opponents deck after you place Gates? I'm not following why is that such a great thing. Using your opponents cards against him is a great and nice idea (we all love steal, right?), but drawing everything turn before your opponent does? Meh.