I am a Tank and i approve of this guide <3 also thanks for pointing out the good things, should add a picture of the warlock and dk ones too seriously ground spell effects make any experienced player nervous :P
yes I know that lovely green circle with flowers in it is good no that doesn't mean that the second i see it appear under a boss i when i don't know the fight I don't shit a brick and have to stop myself moving out of it XD this impulse is much hard to contain when the ground effect is a purple spinning vortex of death and destruction :P