Re-Shephir, Midnight Mother

{x}{u}: Create a token that's a copy of target
creature with converted mana cost X, except the
token is black rather than any other colors and it
has "At the beginning of your end step, sacrifice
this creature unless you control an Unmade."
"Re-Shephir, the Midnight Mother, giving birth to abominations with her essence so dark, so terrible, so consuming. She is here! She watches me die!"