Nonbasic land?? looks like a effect to me

It's weird - this is definitely a bleed, but it's not a break. White can take care of any permanent as long as the answer is answerable. I just figured the best way to represent progress was nonbasic land or artifact.

I like this

What rarity?

Uncommon?

given the density of nonbasic lands in the set I'd just give it may and hit only artifacts

uncommon seems right

"White can take care of any permanent"

I disagree. Land destruction in any fashion is not part of the current slice of white pie, even the infamous Oblivion Ring explicitly says nonland. THe closest we get is Faith's Fetters. Otherwise the rare "exile target permanent" line has only shown up on two mono-white rares that I know of (Archon of Justice and Mangara of Corondor).

Circeus, white's weakness is its inability to easily draw cards ('except by doing really white things', apparently, but I disagree with that...) and the fact that all of its 'answers have answers', or are equal (notwithstanding cards like Declaration in Stone and Angelic Edict, which are breaks forced by development)

This is a card that answers a problem, but is -very- easily answerable in return. Every color can remove creatures from the board, even green now. While removing lands is unusual for white, it's certainly not outside of its wheelhouse, because it does not violate any of its weaknesses. That's the definition of a break. A thing that a color does not usually do, but does not violate any of its weaknesses is a bleed, and that's where this card falls.

I agree it's unusual and weird, but it's definitely doable. Whether we want to do it, though, is another question; it's totally a weird design for the sake of being weird.