Oath of Kiora

When Oath of Kiora enters the battlefield, create a 6/6 green and blue kraken creature token.
At the beginning of your upkeep, target creature gets -X/-0 until your next upkeep, where X is the number of planeswalkers you control. If X is one or more you may have target creature you control fight that creature.
"For all that swims in the depths, I will keep watch."