Just play DH and search for “draw” and “attack” spells, add Metamorphosis, avoid Glide. T1 OTK all the time. Do not include Discover or Choose cards. Just spam all cards as they are drawn. 3 wins in 3 minutes, but pretty boring.

Better counterplay:

“Battlecry: Your opponents spells cost (1) more next turn. If they play a spell, repeat this battlecry”.

They want spells? They’ll be paying for them, hard.