I actually put some research and experience behind this and the above spell list what I came up with, all level 5 and below. There are better spells of course but on higher levels, capable of dealing with later game threats as it should be.
Another thing, I did never state that the spells above should work on their own, quite the contrary in fact - they work best in combination with other spells and units. For example, you don't need that many Bonds of Fire to make a huge difference when your army consists of lots of arbalests and foot soldiers. The elephants will come to you in smaller numbers actually possible to stop. The thing is to break the "wall of tramplers" and buy time for the real troops to fire and hack. Just some poorly scripted mages with with minimal backup will do nothing. We all know that.
Oh, and if you have anything better to offer in countering an early game elephant/mammoth rush besides running away please share. I believe we are all ears.
