Archangel Avacyn

Flying, Shroud, Indestructible,
Echo{5}{w}{w}{w}(At the beginning of your upkeep,
if this came under your control since the
beginning of your last upkeep, sacrifice it unless you
pay its echo cost.)
Permanents you control have Indestructible
and Ward—Sacrifice a permanent
"She defends us to this very day"
— Priest of The Church of Avacyn