Why does Desert Tombs suck?

[mivayan]

Started a quick game:
Ctis, desert tomb,
Phoenix, fire9, air1, dom5
order1, sloth3, heat2, death2, luck0, magic3
Mausoleum

Or order 2/death3 maybe.

The phoenix can capture provinces from turn 2 onwards with fire dart. Sloth might not be a huge problem if you use sauromancers with raise dead to expand when you have it available. The tomb wyrms with fire blessing can kill stuff and have nice mr, but can die fairly quickly unless you have lots of fodder troops.

I got the king hero on turn 2 or so... as prophet hs has unholy6 and summons 3 tomb wyrms each turn. Perhaps not a good idea though, since you need him to fight or cast royal power.