Elemental King/Queen summoning limits?

[Chazar]

Mark the Merciful said:
Agreed that Air is also very powerful, but in a different (rather more direct) way, and has different applications. I wouldn't want to cast Wrathful Skies in support of an army - my elephants wouldn't thank me for it.

Sure, especially since I just showed you a few turns ago how I successfully used WrathfulSkies to kill a third of my own main army (despite of an active ThunderWard spell) against your lousy 25-point PD......I really bit myself somewhere when I saw that batte replay...