Not sure it needs the "from anywhere" - things are only permanents on the battlefield. If you want it to trigger off discard it probably needs "permanent card", vis Amrou Scout

I think it just needs the "card", though that's a good point about things only really being permanents on the battlefield. Of course, cards like Creeping Renaissance refer to "permanent types", so may it's supposed to be "Whenever a card with a nonland permanent type is put into your opponent's graveyard from anywhere..."

No, Nature's Spiral says that "permanent card" is fine.

Possibly also needs "becomes a copy of that card", like Scion of the Ur-Dragon

This starts out legendary, but it loses the supertype when it becomes something else. Is it supposed to be more like Sakashima the Impostor?

Thumbs up for a good blue/black mechanic!

@dude - You know, that's a good question. I'm not sure if it really needs it for balance, and somehow it seems more flavorful if it doesn't. And I think I'd have to go full on Sakashima and add a bunch of text if I did, because if I were just make it remain a Legendary Artifact, I'm pretty sure there would be all sorts of screwy rules issues.

I do like this a lot. I think "nonland" isn't necessary, since the becoming-a-copy is optional.

That's entirely for flavor purposes. Struck me as an odd idea for it to be able to reflect an entire landmass.