Does the Spirit Vessels revelation only affect the undead created with spells cast from Oracle spell slots? Or could, say, a Wiz 7/Ora 1 with the revelation be able to cast (arcane) Animate Dead to control (6HD/lv*7WizLv=) 42 HD of undead? There's an FAQ that makes me think it would work this way, but I want second opinions.
Spirit Vessles:
Spirit Vessels (Su): You can channel wendo spirits into lifeless bodies, reanimating them to aid you. When using the animate dead spell, you can control 6 HD worth of undead creatures per caster level rather than 4 HD. In addition, any zombies or juju zombies you create using animate dead, create undead, or similar spells possess maximum hit points.
from Animate Dead:
No matter how many times you use this spell, however, you can control only 4 HD worth of undead creatures per caster level. If you exceed this number, all the newly created creatures fall under your control, and any excess undead from previous castings become uncontrolled. You choose which creatures are released. Undead you control through the Command Undead feat do not count toward this limit.
from CRB FAQ:
General rule: If a class ability modifies your spellcasting, it applies to your spells from all classes, not just spells from the class that grants the ability. (The exception is if the class ability specifically says it only applies to spells from that class.)
