Org: Solitary, Nest (1-2 plus 2-4 mummies), or Congregation (1-2 plus 6-10 crocodiles plus 2-4 giant crocodiles plus 2-4 mummies) (Congregation is a RW group of crocodiles, btw.)
CR 14 or 15? Can't make up my mind on how it compares to the mummy lord.
Double standard.
1d8 crocs or 1d4 giant crocs?
CR 10 seems fair. If it's the equivalent of a 5th level spell, the mummy should be able to summon 1d3 giant crocodiles or 1d4+1 regular ones. Let's give the regular crocs a bit of a boost, to 1d6+1?
I would like them to appear in groups with other kinds of Composite Mummy, like they do in the Polyhedron adventure, which has 2 of each kind.
The Hippo-Mummy could have incredible Strength, Say Str 30 like an elephant, so it has 2 slams doing 1d6+10 as its primary attacks and a 2d6+5 damage bite as a secondary attack. All with added mummy rot, obviously.That way it has 2 slams that each do the same damage as a standard mummy (1d6+10 in 3E, 1-12 in AD&D).
If we want to get really crazy, we could give the hippo mummy something that ties into Taweret's fertility...like a curse where the victim gives birth to a scorpion swarm.![]()
For the hippo mummy, I like the idea of them being twisted fertility things--perhaps they cannot injure a pregnant woman? Perhaps they appear to avenge deeds done against expecting mothers?
Unfortunately there aren't many water-based spells or powers in the SRD. We could give them something like control Water, water walk, fog cloud, the ability to summon a hippopotamus, giant crocodile or water elementals (1 Large or 1d4+2 Medium?) or the ability to create a whirlpool like an H20 elemental.
Add "or divine council (3d4 composite mummies of various types)" to the Org line?