Without knowing more about a planeswalker they can be very bland. This one uses its name to be especially obfuscating about its abilities, so... hard to tell.

These abilities are appropriate in the colors. I wish the ultimate would do something with the remaining cards: bury them or put them on the bottom of the library.

Is it called The Unknown Force because we don't know its starting loyalty? ;)

"Force" seems not like the best option for a subtype. Have you considered not using a planeswalker type at all, leaving it "unknown"?

I forgot the starting loyalyty, whoops. I did consider Unknown.

So conceptwise, this planeswalker is a being that ascended from mortal to avatar prior to their spark igniting. Their origin is lost to time, and they lock themselves away, inside planes, only emerging at moments of dramatic shifts, slightly alternating the planet's existence. Their form as it appears is a circle of chaotic colors and patterns, from which one thirdish (head, neck, torso, and one arm) a bipedal fog emerges. I didn't want to pull The Wanderer, so that's why I gave a planeswalker type. This planeswalker was inspired by Puella Magi Madoka Magicka's Kyubey, but I tried to go for a "power gridmaker" (probably not the term I want) instead of rancher route.