[ioticus]

Graeme Dice said:

What were the parameters of your test?

Not sure what parameters you want, but I set up a test 2 player game and let an army siege a watch tower while an earth 3 mage cast Arcane Masonry inside the tower. I looked at the amount of defense remaining after repeatedly casting the spell and it never once increased the defense. I tested this both before and after the tower was breached. I tested the same way with a higher level earth mage casting Iron Walls, which also had no effect on tower defense.

That's unlikely, since they are expensive both in gems and mage time compared to the fairly small benefit they give you. If they were low level, say around research level 3, took 5-10 gems, and only required an earth 1 or 2 mage, then they'd be powerful spells.

Perhaps so, but I think they are nice spell concepts that I hope to see return in useable form in Dominions 3 at least.