Argenport Valkyries

This is my try on making Valkyrie Spireguard work. I have had good results so far against various decks. I'm unsure if Silverwing Commander is good enough, but I need a critical mass of Valkyries to make the Spireguard work consistently, and it seemed like the next best options since I already play 4-of Enforcer and Makto. Let me know what you think!