First wording is a little clunky, but it has the advantage of allowing six possible choices and thus can be rolled with a d6. Changing colorless to multicolor does not, as far as I know, allow for a simpler wording.

I happen to have made myself a die with the five colored and the colorless mana symbol, so that's easy for me. I still think the first ability does just go too far with the chaos - both randomly choosing and repeatedly re-choosing for minimal play value and on a card that is just about three evergreen keywords.

This card doesn't really feed the imagination - it doesn't help that the name and subtype both are generic as well and the colorful/less protection seems like an off-color choice on a red-green hybrid card.

None of the pieces really come together on this card - it's not even just the clunkiest ability, but it stands out as the one paragraph that you most hope turns this card into something interesting.

Considering the similarities I'm going to say this is a slightly worse design than Rainbow Knights. At least those are white and follow previous Knight design patterns.

You know, you're entirely right. I was weirdly obsessed with rendering her being clearly red and/or green and not at home anywhere, but there are far more interesting options. I'll make the first concept a one-time thing but otherwise keep it, because some sort of imperfect unblockability is IMHO absolutely necessary to render the feel of the character.

Yes, the new second ability is meant to activate for ANY planeswalker.