I would like to point out, that slow isnt that mana Intesive to a decently geared Arcane Mage.. It cost the same as blink!
What I personally would watch out for (also, having a lock and and Arcane/fire mage) Is more than likely, sheep for you, slow on pet, using ice cd's to kill pet, then a fast trinket, AP, pom fireball, fireblast, then the frost nova/icelance combo with another fireblast. IE, arcane blast, tho powerful, takes too long to cast to get rolling, and makes you have to stand still. against a lock, standing still is ~ = to letting a hunter autoshot you do death.
Edit: If he is smart, he will use his IMP CS when you try casting fear, and not use his racial or trinket, unless cs is on cd. As you can tell, hes prolly not gonna be too concerned over curse of tounges, as hes gonna be using instant casts.
Definatly use your felhound, and follow Loki's advice on the lock side.
Good luck.
Edited, Feb 12th 2008 1:50pm by orickruns