Intresting idea. Though, I prefer playing cards than waiting to discard.
Doesn't everybody? This guy is supposed to shine in a situation where you can't play your cards.. like if you're getting screwed by Discord.. or Silenced.. Earthquaked.. you name it. Gives you a way to sting back at a denial deck.
Also useful for time because of the drawing power, you could intentionally fill your hand and then start bombing your opponent with these guys.. say if they had a shield that you couldn't get past by playing it.
And even if it's getting nerfed there is still Fractal. Fill your hand with Minotaurs and then don't play them.
Should the creature be a little stronger, or the discard damage a little more?