Earthquake Suggestion

There appears to be moderate improvement for upgrading earthquake spells. The incentive to upgrade EQ for a few destructive % points is pretty nominal. There is some value for zapquaking but using four EQ for destroying any level wall is the primary reason to make EQ spells.

I suggest that a good improvement would be to increase the radius of the EQ (ie. one more tile per upgrade). There would an incentive to upgrade more now so that destroying more walls within a certain radius would add more value to a raid. Max EQ would have a chance to open another compartment in war.

If the radius is ideal currently, perhaps change the radius smaller for level 1 (ie. same as a jump spell) then work from there.