Quote Originally Posted by Double A View Post
I knew there was a point to that tree!
The tree is utterly pointless until that stage, so you do have to resign yourself to wasting three talents; however, Wynne doesn't utilise many attacking options anyway, principally acting as a healer/support role, and thus Mana Clash is a sound option for her once you've gathered the relevant Spirit Healer and Heroic/Glyph de/buffs you want.

For Morrigan, you might want to consider her wider range of attacks; she's excellent at crowd-control and will easily be able to lock down a tough caster with Cone of Cold, Crushing Prison and the like. :3