Obe, Gilded blade of the Night

Equip {5}
Equipped creature gets +3/+3 and Double Strike.
Whenever equipped creature attacks, put a 0/1
Gold creature token in play with "{t}, sacrifice this creature: add {1} to your mana pool."
Heirloom (When equipped creature dies, equip it to
the next creature that enters under your control for {0}.)