[Arralen]

• Do not send the expensive Celestial Masters (CM) into combat, unless you really need one there because of his magic pathes. Better use Masters of the 5 Elements (Mo5E), maybe with a path booster.
• Get yourself a dwarven hammer or two. You are going to forge some 10- or 20-gem items, so they should pay off soon.
• At least, give them some Lucky Coins
• Sitesearching with LvL1 only isn't sufficient. Try to get a CM with 2 in all pathes for searching. Apart from water and death, that is: you have enough income to use the sitesearching spells with these. Cheap Master of the Dead and a Master of 5 Elements with random water can cast these spells. Keep in mind, though: a province can only have 4 sites.
  Here are all the siteseeing spells Code:

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  TYPE     SPEll     NAME (SKILL/COST/EFFECT)
  
  death  - Conj -2 : Dark Knowledge (1/3death)
  
  water  - Conj -3 : Voice of Apsu (2/2water)
  
  water  - Conj -4 : Voice of Tiamat (2/8water - all elemental sites underwater province)
  
  astral - Conj -5 : Acashic Record (3/25astral - reveals ALL sites)
  
  astral - Evoc -2 : Arcane Probing (1/2astral)
  
  special- Evoc -9 : Strands of Arcane Power (7/90 - special, ritual)
  
  fire   - Thaum-2 : Augury (2/2fire)
  
  air    - Thaum-2 : Auspex (2/2air)
  
  earth  - Thaum-2 : GnomeLore (2/2earth)
  
  nature - Thaum-2 : Haruspex (2/2nature)
  
  blood  - Blood-2 : Bowl of Blood (2/2blood)

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• Your troops are poor. You have 178 water gems, but you haven't summoned 1 single "Demon of Heavenly Rivers", which are upkeep-free, btw..
• Did I mention those DoHR are auqatic, as are all your mages which have water skill? The mages can even bring along non-aquatic troops in small numbers...
• You don't have scouts. Use Black Servants.
• Oh, you don't have a mage with death-2. Correct that.
• Oh, you don't have any conjuration researched. Better correct that, too. Summons are generally upkeep-free and stronger than standard units. (Trolls are 1gold/turn, though)
• Think about either a)giving your prophet better protection or b)killing him off and making a CM your prophet. Prophets are upkeep-free. And the CM will get Holy-4, the only way you can get such a high priest. ATM, you Chariot Prophet might be killed by a lucky hit anyway (Prot 8, HP 11 isn't enough even with DEF21 and etherealness).
• Start a new game: Your choice of scales doesn't make much sense. Productivity-3 and a Watchtower mean you get more ressources in every province, but you don't gather them in your recruitment centers (forts) because of low admin value. So you either need to put a castle into every province, or you recruit troops in nearly every province every turn. You havn't done both up to now. So better get yourself some growth (which gives as much money per scale as productivity in CBM 5.2, but pop growth and supplies as well) and maybe a better fort or some magic on your pretender.