People will eventually realize that someone bombards them with anonymous spells though because if you get a hurricane on your capitol and your most valuable provinces every or every 2nd turn it is very unlikely that it is a random event.
Usually you can then find out which player most likely used those rituals on you.
I was more concerned with whether there was an identifiable message the turn the spell hits. I kind of like the ones where if it succeeds no one knows who it was...if it fails, oops.
Identifying likely suspects is also easier in D3 than D2, with reduced magical diversity within most (especially late era) nations, with the restricted randoms and all.
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Are we insane yet? Are we insane yet? Aiiieeeeee...