Pledge decks work by pledging a card and essentially adding 3 more copies to your deck with roach. So I’ve trimmed up some lists to utilize the best pledge units in my opinion. (As well as 2 Legion Loyalist for consistency and combo plays)
Eilyn getting berserk off palace is usually an instant win.
If you don’t open a pledge unit, your entire deck can be shut down pretty hard so mulligan for the pledge units. Even going down to 6 to get one still means you’ll be rewarded in the long run through roach.