1. Slim down to 30 cards. If you bring any more than that without incorporating Hourglasses into the deck, you're lowering the deck's efficiency.
2. Decide on a focus for the deck. Since you're using Deathstalkers as your main damage source, slim the deck down into a
/
duo.
3. You're going to need some support from Darkness. Since you're already using Nightfalls, go with Devourers as well.
Sample deck:
52u 52u 52u 52u 52u 52u 5uk 5uk 5uk 5uk 5uk 5uk 5uk 5ul 5ul 5um 5um 5um 5um 5um 5um 5uo 5up 5up 5uq 5uq 5uq 606 606 606
@Wonder
You have an edit button -- use it