Dispelling(important),Keeping your PWS on CD.Asissting,mind control (depends on csetup),fearing properly,chaining fears with mc><SIlencing after.Keep dots up on kill target.If you are playing with rogue,you should wait for him to sap up,then rush in mounted with fear,dot,chain with silence>,mc ,disarm,blind etc.
If you are playing with mage,let mage go first,deeps,poly,nova ,chain it with dps,silences etc.
Its very situational,you ahve to see opportunity for such things.
Watch videos and duel alot your counter comps.Mind cotnrol is godlikespell.