USS Kearsarge

When USS Kearsarge enters, exile target creature. X is
equal to the exiled creature’s mana value.
Attach to USS Kearsarge all creatures exiled by her. USS
Kearsarge power and toughness are each equal to the sum
of the power and toughness of all creatures attached to her
and she gains all static and activated abilities of these
attached creatures.

{x}, {t}: Exile target creature of mana value equal to X.

When USS Kearsarge leaves the battlefield, return all
creatures attached to her to their