However, the question I am curious about is what is the best reserved card we could hope to get color-shifted?
For reference: [All non-colorless cards that are reserved] (Because colorless cards can't be colorshifted)
A white or green Ancestral would be nice.
I think the only way this is possible is with an insane restriction like "Cast this card only if your deck contains no Islands"
Why would you need islands if you could have Ancestral in green?