Oath of the Subtle Ghost

When Oath of the Subtle Ghost enters the battlefield, create a token that is a copy of target creature, except it is a blue spirit.
Whenever you activate a loyalty ability of a planeswalker, you may create a copy of target
creature token you control, except it is a blue
spirit.
"This multiverse of yours is... intriguing. I will keep
watch... until my curiosity wears off."