Hrm... I think I'm misunderstanding something, or maybe it's a misprint, but we have the following under AoV tactics:
It evokes its sign of vengeance at the start of battle, then teleports to the target and spends an action point to use double attack against the foe.
Sign of Vengeance is a Minor action and in its description it says that the teleport is a Move action. So why would it have to use its Action Point to use the Double Attack (listed as Standard, at-will)? Shouldn't it still have a Standard action ready on its first turn? Or does the flavor text mean that it makes two Double Attacks?
EDIT: Nevermind, I found the 3-page Angel post already