[Bananadine]

Since my test game is all set up now to hit Lamia Queens with extremely penetrating Soul Slay attacks, I tried these other things as well. According to a few brief tests:

Fatigue does not change when the form changes.

Losing all HP while Phoenix Pyre is active does not trigger any form change until AFTER the Phoenix Pyre effect has taken place. So, the unit may go to -983 HP or some such (the red damage bar goes all the way out the window!) and then become reborn with full HP, all in its first form. When I tested this with a fire-empowered Lamia Queen, that's what happened--then, the Lamia Queen was struck by another soul slaying, and this time she was too tired to be reborn, so she exploded and changed form instead (and also lost all but one of her hit points, after the form change, as in my prior tests). And after that... my Soul Slay caster went off his script and enslaved her mind, and she turned into a non-commanding, second-form Lamia Queen, which quickly regenerated (as lamias do) to 50/28 HP! That surprised me. But her new nation had Gift of Health going, so it makes sense.

Losing one's soul with an Elixir of Life in hand also does not cause a form change. It just causes afflictions (due to the great wound), refills HP, and destroys the item. This all happens very fast, unlike with Phoenix Pyre which has an explosion in between the wounding and the healing, and so you don't get to see any -983 or whatever. A damage number doesn't even rise from the unit.

One more thing I learned by accident: Stream of Life can cause a unit to go berserk while also "killing" it! ...Or it can cause a unit to become feebleminded, without wounding it or causing it to go berserk (my unit was probably healed when this happened, but I couldn't tell because she was already healthy). A strange spell.