When your shaman in on a cliff, and wants to go down but can't, because there is no ramp avaliable (or a terrain modifyer spell), he can use this trick to fall from the cliff to the lower land, with the cost of a single spell. As she falls, she will not lose health.

 

As you are on the top of the cliff, select your shaman and take her near the edge of the cliff, right near where you want her to fall to (many people have trouble of this step. All you have to do is cast an out of range spell on that direction, and as she is on the edge, click on a place she can't reach . this will make the shaman stop on the edge of the cliff. The other way is selecting the shaman and pressing "D" until she gets in a good place).

 

As she stands on the edge of the cliff, select the shaman and cast a spell (could be a convert or a blast - a cheap spell is better). As you cast the spell (while the shaman is jumping from the cast of the spell), press "D". Note that you only have to press it once.

 

If the shaman was in the right place, and the "D" was timed right, your shaman will fall the cliff to the lower land, when she actually couldn't because the hill was too step to walk to the lower part. So, you wasted a blast to reach what was before an unreachable place.