Magician pets: Earth Elemental

The earth elemental has the highest hitpoints of all elementals and casts a rooting spell. This is pet, although has the most hitpoints, is not a very good tank. Its attack rate is slow and has no means of holding agro outside of his root, which can be broken by any direct damage (Tends to break on 2 out of every 3 nukes).

On the other hand, the Earth Elemental is great for chaos control and for root rotting mobs. A mage can generally get 1 or 2 nukes off on a mob that other pets normally wouldn't be able to tank before the Earth Elemental root breaks. The pet can be kept out and then sent back in briefly just to get its root off, then taken out again.

The Earth Elemental is not generally liked in groups because the root tends to mess with agro (Root causes the enemy to attack whatever happens to be closest).

Further information on the root can be found at EarthElementalAttack.