Wishful Aeronaut

Dream {1} (You may pay an additional {1} as you cast this spell. If you do, name a nonland card.)
When the named card enters the battlefield, if it has flying, pair it with with Wishful Aeronaut.
As long as Wishful Aeronaut is paired with another creature, each has flying and hexproof
and must attack or block together.
"Oh to ascend to the realm of the rocs!"