Once and For All

Destroy target creature with power 4 or greater.
If you control a Legendary creature or if the
target of this spell is a Legendary creature, exile
it instead.
Elsword: "We faced each other four times. That's
enough, don't you think? Need I say more? Let's fight!
We'll settle this for good!"
Berthe: "You take the words out of my mouth!
This time, I will defeat you and end this once and
for all. Kuhahahaha...!!"