Sweet build! I have a GW build that's a lot slower and grindier, but I think you're on to something by adding blue. I've been getting good results from
Shapers' Sanctuary, it provides a lot of card draw against control. And although
Settle the Wreckage is AMAZING with
Aven Mindcensor, I have been trying out Dusk//Dawn since the Dawn half is a great way to win longer games. I love these decks, and I hope we find some cool additions in Rivals!
https://deckstats.net/decks/78550/876944-gw-hatebears/en