It actually only destroys the ones you dont control, which means you can play it even in a deck filled with permanents and not worry about it at all
When a creature, it can hide from removal, and while an aura, it can do the same
Blue bounce spells are the second best tempo cards in limited behind pure removal spells, so a reusable enchantment Unsummon dependent upon playing creature to begin with seems like a card that you'd like to have in your deck
If you want to know what gifts await, Mike Turian's Collecting Innistrad: Crimson Vow article has everything you can find
But rather than getting one final usage with threshold or getting a discard trigger on its way to the graveyard, what if you could get it back
Starter deck includes exclusive holographic cards for new and veteran players