Casting spells on another player anonymously...

[Cainehill]

Pretty sure that it's as I said : if the spell doesn't put troops down that would belong to the caster, the spell is anonymous. Hard to tell the cause of an earthquake, volcano, or plague of undead riders that vanish (and that would attack the caster's own troops in any case - I've wiped out my capitol's PD with a casting ).

[Ballbarian]

Yep Cainehill. As far as I can tell so far, your rule of thumb is very accurate. I suspect that I will be casting Rain of Toads and Black Death in the next few turns...

[archaeolept]

don't forget leprosy