Does Wraith of Echoes trigger and draw a card when it dies, or only when other units die?

Ruling: Wraith of Echoes does not trigger on its own death. It only triggers when another friendly unit dies.

Nuances:

• The card received a clarity errata (not functional) that added the word "another" to make this explicit
• Original text: "The first time a friendly unit dies each turn, draw 1."
• Errata text: "The first time another friendly unit dies each turn, draw 1."
• Despite the text change, the functional behavior was always that it did not trigger on its own death