Board control and the ability to move effectively is the key to the game, for me at least. Hindering your opponent is huge, and having a screen of low cost cannon fodder is great to help control through hindering.
On the flip side, being hindered absolutely sucks and if you are anything like me, you will pack a teleport or two specifically to make sure you can break hinder control. Ok... if you really are like me, you play the wizard and pack a ridiculous amount of teleports to break hinder, gain hinder on a foe, deal with conjurations, drop Hydras on top of people, pull some poor sod into your Zone of Death where hydras, packs of mana leeches, twisters, and all kinds of pain and suffering await.
Oh teleport, how I love thee... it is possible that in my game circle the Mage Wand has come to be known as my Wand of Teleportation. I can't confirm or deny that, however.