Warden of Holy Ground

Defender, Flying
White Spirits gain +1/+1 and Hexproof
When Warden of Holy Ground enters play,
choose a land you control. It gains Hexproof,
Invulnerability, and neither it's type not
text can be changed so long as any Warden
of Holy Ground is in play.
Prists betrayed by everything but Holy Ground,
the joyful dead, and their congregations sometimes
rise to bless and defend them."