Tips and tricks for playing Heroes 3.

Immunity cannot be developed; you either have it or you don't.

Looks like you haven't played World of Gods :p

The question about Unicorns remains open...

In my opinion, if creatures are near the Unicorn (more precisely, within 3 hexes behind it, correct me if I'm wrong), they receive a simple +5% bonus to their resistance skill, similar to a necklace that grants resistance! I think that's how it works, but I could be wrong...