Well, I don't think any of the direct damage rage spells are much use in the late game. Why use Black Hole when you can be using Soul Drain and Time Back? Well, against Undead.
The only rage spells I consistently use are Glot's Shield, Evil Shoal early in the game, Chargers, Ice Orb, Soul Drain and Time Back. The others aren't necessary, at least not for me.