This mechanic would be best given some name other than "Enchant", because that's already got a meaning as a keyword mechanic - one that's already on this card, in fact.

But a cycle of cards with the mechanic from Detainment Spell / Kjeldoran Pride / Stasis Cell sounds like a fun thing.

You may want to think about sorcery speed for enchant. 20XX has taught me that even a minor amount of Stasis Cell like cards can really up the board complexity.

(Oh, also just noticed the "you control" line under enchant. I assume that was an accident. It, at least, doesn't make a lot of sense with this card, unless your set has a -1/-1 counter theme.)

I like this sort of ability, but it should be used sparingly. It eliminates the inherent card disadvantage of Auras. Wording-wise, what about:

"Enchant ~thing~

Transpose ~cost~ (~cost~: Attach to target ~thing~. Transpose only as a sorcery.)"

For this card, ~thing~ is creature and ~cost~ is .