Rain of stones, and gifts from the sky

[Twan]

Edi said:
Rain of stones indeed hits everything on the battlefield. Physical damage, so helmets and armor help a lot against it. Otherwise you need luck and/or ethereality.

Yes I wasn't thinking so but it was because I often used the spell against undeads who have sufficient protection or hp to often survive one cast. I've done a test using 2000 protection 0 Machaka militia instead and the spell killed 1646 of them, it really hits all units and not one per square (the strange thing is : like previous poster I also remember to have seen many unprotected/unbuffed mages surviving the spell in some games).