Stoneforged Animist Sword

(Require attunement)
You have +1 to hit and damage. When drawn the
sword whispers, "Swift defeat to my enemies."
When attacking you can say "For all of Zendikar"
The target of your Attack becomes your Sworn
Enemy until it dies or until dawn seven days later.
On a hit, your Sworn Enemy takes an extra 1d8
damage. While your Sworn Enemy lives, you have
disadvantage on Attack rolls with all other
weapons. When your Sworn Enemy dies, you can
choose a new one after the next dawn.