I was thinking of making those the main choices for the dex Blackguard. I want the dex one to focus on mobility for himself, and allies. The wis one focuses on damage, and annoyance. One feat that I want to give him is that he can mark 2 enemies with his Call of Shadows when near (either adjacent, or burst 3, can't decide) a bloodied, or unconscious ally. What tier would that be though?