Multiple Grey Riders can be pretty overwhelming, and Ardent Hero can work as a built-in Shield of Justice if you're playing against another MM deck. Double Gateway adds to the board control, and with only 15 creatures we'll probably want to use them most of the time.

Decklist: https://www.keyforgegame.com/deck-details/de3e0a66-d7e3-47c2-a2d4-81d14f529839