Iffeliel, Grace in Perpetuity

Whenever another face up nontoken creature
would die, and was not sacrificed, turn it
facedown as though it were manifested under
its owner's control instead.
Facedown creatures your opponents control
attack each combat if able, and facedown
creatures have Changeling.
Come, burn away this skin deep facade; and live
knowing the that we are all one in deathless
perpetuity.