When to cast Slows

[Jimjam]

If the mob is equal or above the level of a warrior tank consider that taunt won't work on the mob, so you can't rely on the tank taunting slow off you. Also consider root will likely break early.

Something I've seen some people do against harder mobs, when a warrior is tanking, is to memblur the mob after it has been slowed. Not sure if this is a good idea, but at least it helps ensure the mob won't be beating on you after slow, even if it screws up the warriors lead!