[apoger]

My thoughts;

Desert Tombs:
Costs 200
Requires minimum heat +2 and death +2
The heat +2 puts C'tis at -%5 as it is not their prefered temerature.
No Swamp guards available.
Start with one unholy priest.
Have the ability to convert death gems into more unholy priests.
Unholy priests can generate undead for free.

The undead generation of the priests must be compared to C'tis's ordinary ability to generate undead via reanimation. It takes the priests approximately 7 turns to generate more undead than their "reanimation" cost in death gems. Thus gaining advantage in undead summons takes a bit of time. However with time it can get very impressive. The question is, will your enemies let you sit around and slowely crank up an undead generation machine. Plus by the time it really is pumping, will undead be meaningfull?

It's hard to tell. I'd say that Desert Tombs is fun, but questionable for multi-player situations.


Miasma:
Costs 50
Requires minimum heat +2
The heat +2 puts C'tis at -%5 as it is not their prefered temerature.
Sauromancer replaced by Marshmaster (-1 death, +1 water, +40 gold cost).
Raises taxes by 1% per level of dominion, but requires at least dominion 6 to start seeing benefits due to the extra heat.
Miasma requires a high dominion strength to be effective, and as such has the hidden cost of that extra dominion.

I've done some testing for the "disease" function of Miasma. I ran a few armies of enemy troop back and forth over a Miasma C'tis. Results were approximately a 5% chance of each troop getting diseased every turn they were in the Miasma dominion. Keep in mind that this is an aproximation from a small sampling. Extensive tests may get more precise results. While this is unpleasant, I don't think this will stop enemies from attacking. Particularly if the Miasma dominion is seeping into their area.

I like the idea of +5% taxes with a 10 dominion.
I don't like the Marshmaster, or the attention that the dominion will draw in multiplayer. It's a close call, but I'll probably pass on Misama.