All castles in Heroes 3.

Message from celt
perhaps elementals are good against undead (vampires can't drain life from them).

The Tower also has plenty of creatures that the little vampires won't be able to drink from :D :D :D Of the non-stacking units, you can only drink blood from nags — but nags have their own plus: no retaliation on attack... so everything is very relative!;)

You simply don't know how to play as undead. No matter how much you slow down three thousand skeletons, you'll lose if you don't have three thousand skeletons yourself.

That's exactly what I'm saying — I don't know how... but on the other hand, I know for sure that 3k skeletons can be destroyed quite easily.. the main thing is not to rush... they can simply be blinded... then cast a bunch of useful spells on your own army and weaken the skeletons as much as possible — and that's it!=)))) It's a piece of cake!