Contracted Onslaught

Contracted Onslaught's color identity is colorless.
Choose one, then shuffle Contracted Onslaught
into its owner's library:
*Put X 1/1 black Horror Minion creature tokens
with Lifelink into play. These creature tokens
each enter play with a +1/+1 counter on it.
*Put X 3/3 green Elephant creature tokens into
play.
*Put X +1/+1 counters onto target Legendary creature, then that creature fights another
Legendary creature in play if able.