V'H'Y'H, The Ruler

Indestructible, Flying
Eminence - So long as V'H'Y'H,
The Ruler is in the command zone
or on the battlefield, other angels you cast cost {x} less to cast
where {x} is the number of angels you controls.
So long as V'H'Y'H, The Ruler
is on the battlefield other angels
you control cannot be destroyed or exiled