Elementals were horrible this last patch, at least at high elo. except on Millhouse and Gallywix. Master of Realities will be good on 5, bc you can stay on 4 with domos and triple into it. But I doubt elementals will be broken. Mechs will reign supreme. Beasts will still be solid with the croc.
Elementals are so fun with Dazzling Lightpawn and Nomi. It scales so damn quick, just buy every elemental you see and watch the stats rise.