mc5 - Obscure vault 99 (7)

It's the cryptic crossword discussion game. Tease each other with clues, help each other with the dailies, educate the beginners, whatever.

I don't geddit

There's an "EN" I can't account for.

Indeed

Took me a while to re-work out the logic: it comes from the fact that Paul's = MINE.

Having finally rediscovered mc5 ...

How about Scale back creature (6)

Blob...

Only thing I can think of is animal, not a common usage of "scale" though.

I think it works, but it's ambiguous. It could equally well be LAMINA by taking the clue the other way.