I got used it against me once, he ate my snow sapphire and dagger when I was playing allyless Eladwen. Well, I was probably going to lose anyway...

KP is good for humans because they allies generally lack in attack department.

For shadow, for example, 8/7 Brutal Minotaur is a bit of overkill. But with humans you can get 4/2 Kris with KP and...

You can be winning the whole game, but then still lose, and vise versa.

Just wins you games?

Your main vulnerability with this strategy is rush decks (Eladwen rush in particular), they will deal damage to you in early game and finish you off with the spells. If you like a strategy of...