Celestia’s Prevalency

Alicorns, Horses, Ponies, Pegasi and Unicorns
you control have vigilance.
If you cast this card while controlling an Alicorn,
you may search your library for Celestia,
Equestrial Princess and put it in your hand.
Shuffle it afterwards.
As long as Celestia soared the skies, there would be
peace in Equestria.