Always wondered why there aren't any spells that deal direct fall damage so I thought of this
[name] - 45 sec cooldown
x sec cast - 20 yd range
The shaman awakens a caldera under the target's feet.Anyone in a 15 yd radius after 3 seconds will be thrown up by erupting magma, taking x fire damage over x seconds.
and a possible glyph that increases the height the targets are thrown up into the air taking a large amount of fall damage.