Quote Originally Posted by Lyrinn View Post
Surecast prevents interrupts from anything, mainly for T5 fireballs, primal phase changes, that odd situation where your tank is letting multiple mobs beat on you and you need to heal through constant interrupts, and possibly a few other cases. It's a niche skill but it's not like you have anything else to cross other than the main 4 listed previously (dat Ruin).

Do you happen to know if it will prevent interrupts from voice going off in T7 (when you have voice not getting hit by it)? I've used it to cure through fireballs in T5 before.

Back to the OP there really are only 4 that are useful to WHM. Swiftcast, Eye for an Eye, Surecast, Virus in that order IMO.

For the fifth slot there really isn't anything that will help your healing. I have mine set to Bliz2 but I barely ever use it if I'm not doing fates.