Alright, 2 questions I believe I know the answer to, but want to verify.
1. Unless otherwise specified (like in Dryad Arbor) lands are not colored permanents, correct? Therefore, a Swamp is not a black permanent, and an Izzet Guildgate is not a red and blue permanent, correct?
2. If a creature that has an Aura on it gains protection from the color of that Aura, the Aura falls off and goes into the graveyard as a state-based action, correct?
I ask both of these because I have just encountered the
Empty-Shrine Kannushi, which has "protection from the colors of permanents you control."
Therefore, for the land question, I'm assuming that if you have a Swamp in play, he doesn't get protection from black.
Also, for the Aura question, if you have no green permanents in play, you can
cast something like
Forced Adaptation on him, and it will momentarily stick, until SBAs are checked. (This being due to the fact that Forced Adaptation is a
spell and not a
permanent while it's on the stack.) Therefore, if you've got something on-board that cares about enchantments, permanents, or green permanents, that number will go up momentarily (which could cause other things to change, based on other SBAs). So, while you would normally not want to enchant him with anything, since it'll go in the graveyard right afterwards, it might just work in some weird combo or unique board state. For example, say you have some reason you need to kill your own guy. If you have at least 1 creature in the graveyard already and no black permanents in play, I'm assuming you can cast
Death's Approach on him, which will kill him from having 0 toughness at the same time he gains the protection from black.
This is assuming I have everything correct. If not, it all falls apart.