7/13/2016: The permanent will keep any supertypes it previously had. Notably, if Imprisoned in the Moon is enchanting a legendary permanent, that permanent will continue to be legendary.
"Basic" is a supertype and therefore a basic land enchanted with Imprisoned in the Moon is still a basic land and an illegal target for Crumble to Dust.
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Gidgetimer says... Accepted answer #1
From the gatherer rulings for Imprisoned in the Moon:
7/13/2016: The permanent will keep any supertypes it previously had. Notably, if Imprisoned in the Moon is enchanting a legendary permanent, that permanent will continue to be legendary.
"Basic" is a supertype and therefore a basic land enchanted with Imprisoned in the Moon is still a basic land and an illegal target for Crumble to Dust.
March 21, 2017 9:11 p.m.