Olly's Kraken

Once I saw that Sinister Design would give me a 3-cost 10/10 unblockable (with a 3 turn delay), I knew I had to give it berserk and win games.
So, that's the goal of this deck. Assemble Dusk Raider, another unit, and Sinister Design. Play dusk raider, sac the unit, play the Sewer Kraken shifted. Somehow hold on for three more turns (and do 5 damage) before you win. That's the whole game plan. If you're clever, play Olly, Maniacal Graverobber the turn after Sewer Kraken, so if the Kraken gets killed Olly will emerge the next turn with its damage. Corrupt and Backlash are to counter Defiance or Annihilate on the Kraken.

I also tried the combo of Sinister Design and Alhed, Mount Breaker but that's harder to get to work, power-wise. I might try using spell-based berserk instead of Dusk Raider since that seems even easier to activate.
Catch me brewing this in Casual!