Today oracle gave me Lionheart and i looked into this topic and thought why not psiontall ? It was pretty easy win. The deck was 6 psions, 6 DS, 3 Fractal and rest quanta source. After winning, i removed a psion and added another pendulum into the deck and went onto the trainer to test for a few matches. The results were pretty good.
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808 808 808 808 808 808 808 808 808 80d 80d 80d 80d 80d 80d 80i 80i 80i 80l 80l 80l 80l 80l 81q 81q 81q 81q 81q 81q 81q 8pu
So what you should do ? The plan is taking the damage and having 2-3 DS in your hand before zerging with psions. 2-3 DS with a fractal or two should give you enough turns to win vs its drawlock. And the good thing is, it doesn't RT all your creatures all the time. Deck can have
+1 fractal -1 ds as well. In my match i didn't bother with waiting 2 ds and 1 was enough.
Edit: Unupped one should also work