If Sett is buffed, does he get +1 from the buff and +1 from his ability (total +2), or just +1 from the buff only?

Ruling: If Sett is buffed and at a battlefield, he gets +2 total: +1 from the buff and +1 from his ability. Sett's ability counts himself because the text says "each buffed friendly" and not "each other buffed friendly unit."

Nuances:

• Units cannot trigger their own death effects unless specified (like Deathknell)
• Wraith of Echoes does not see itself die because it is already in the trash when death abilities are checked, and abilities need the unit to be on board to resolve