[sector24]

Well, a powerful immobile pretender should have astral. I remember fighting a Sphinx with 9 Astral, a little nature, and high dominion. The AI scripted Body Ethereal, Luck, Personal Regeneration and then spammed Paralyze. Almost impossible for conventional troops to defeat due to 1500+ hit points and huge regeneration. Plus the added bonus of the capital always having high dominion and the inability of the pretender to get itself killed by doing stupid things.

Since Body Ethereal and Luck are spells that the AI uses a lot, Astral is a good choice for them.