Verstone and Verfire would benefit from more depth. Maybe adding a DoT effect to Verfire, or a small AoE explosion to Verstone - overall same potency. Thus, Verstone is good against tough targets surrounded by weaker ones, and Verfire is good against strong single targets. It adds a small decision point to the class.

Verflare and Verholy are underwhelming for capstone abilities. They are locked behind a melee combo that cannot always be used. They differ only as to which mana they will fill. Maybe add a small AoE to Verflare, or have it consume the duration of the Verfire DoT for added damage. For Verholy, have it pulse out a little heal.

From a visual standpoint, Verholy and Verflare are not as interesting as Flare, which is a lower level ability. They look COOL, but don't have the same audio/visual impact.

I like RDM, but I feel it could use more depth to allow players to push for interesting play.