You may cast Soar as though it had flash. If you cast it any time a sorcery couldn't have been cast, the controller of the permanent it becomes sacrifices it at the beginning of the next cleanup step.
Enchant creature
Enchanted creature gets +0/+1 and has flying.
When Soaring Hope enters the battlefield, you gain 3 life.
Enchanted creature has flying.
: Put Soaring Hope on top of its owner's library.
Soaring Seacliff enters the battlefield tapped.
When Soaring Seacliff enters the battlefield, target creature gains flying until end of turn.
: Add to your mana pool.
: Put Soaring Hope on top of its owner's library.