RDM changed with 5.0 so a lot of buttons change rather than needing two. So you cast jolt, then aero or thunder until you get a proc to cast stone of fire, this builds up your meter to spend on a melee combo which then turns stone and fire into flare and holy. Theres more changes i havent tried yet but i play on ps4 and thats basically holding left trigger and going through like 6 buttons.