[Scott Hebert]

Personally, I think Desert Tombs is costed appropriately. While I can have and have had large mobs of undead with Desert Tombs, you also get very nice heavy infantry and quite a few other benefits.

Here's a similar question. Why would you take the Lord of the Gates over the Prince of Death? The Prince of Death is strictly better... except that the Lord isn't Undead, and hence doesn't have the Undead vulnerabilities.

Another benefit that C'tis enjoys is one I've seen mentioned elsewhere, in that their Longdead (if you use them) have better protection than 'human' Longdead.

Anyway, just my impressions of Desert Tombs.