ToME Wiki
Intrinsic Attributes
- Level 1: Aggravation
- Level 6: +1 to All Stats
- Level 12: +2 to All Stats
- Level 18: +3 to All Stats
- Level 20: Drain Experience
- Level 24: +4 to All Stats
- Level 30: +5 to All Stats
- Level 36: +6 to All Stats
- Level 42: +7 to All Stats
- Level 48: +8 to All Stats
Note: The pluses to stats represent the total added to each stat at that level, meaning a level 12 Maia has +2 to all stats, not +3.
Aggravation
Morphic oils (or mimicry, if you want to overkill) can help you escape your aggravation flag long enough to use symbiosis, or even summoning. Possession would be nice but then you'd lose all Maia advantages.
Chatter
The undocumented feature of having XP drain around level 20 is completely unfair!
RedNaga: [...] nor is experience easy to remember for them.[...] - that's not undocumented in fact, just a little hazy 
Actius, It's a problem around level 20, but once you've gained a few more levels it's far less of one. Once you reach level 50, it becomes almost irrelevant. And it's not really unfair, it fits with the class design -- Maia is designed to make you fight nearly everything.
Sly: Possession is in fact the best, as you only lose the Agravation flag. The stat gains are tied to your original race, not your body (on the contrary, Agravation, res, and speed are ;-).
Sly: My mistake, the Level-dependant Stat-gains are tied to your body, so you still loose them when you are a possessor 