Xiletak, Unchained Nightmare

Menace, Deathtouch
This spell cost {x} less to cast where x is the
number of creature you control.
Xiletak, Unchained Nightmare get -1/-1 for
each other creature you control.
Sacrifice another creature: Xiletak, Unchained
Nightmare gain Indestructible until the end of
turn.