Sword of the Aether

Sword of the Aether costs {2} less to cast for each Aetherborn you control.
Equipped creature gets +2/+2 and has
deathtouch, and has, 'at the beginning of your
upkeep, if you control five or more Aetherborn
with different names, and five or more artifacts
with different names, you win the game.'
Equip {7}