Does Wraith of Echoes trigger itself on death, or trigger when dying simultaneously with other units?

Ruling: Units do not see themselves die. Wraith of Echoes will not trigger its own death effect, even if it dies simultaneously with other units during combat.

Sequence:

• All combat damage is dealt simultaneously
• Units that die are removed from the board
• Units that died cannot trigger their own on-death effects
• Only units that survive can trigger effects based on other units dying

Nuances:

• This ruling comes from developer confirmation rather than explicit rules text
• A new Comprehensive Rules Document is expected before English release that may formalize this