Suprise

Menace,lifelink
Surprise must attack if able.
While any creature with a finality counter on the battlefield, Surprise gains firststrike, and if there is
no finality counter on target blocking creature when Surprise attacks, put a finality counter on that creature and surprise gains indestructible until
the end of the battle.
When surprise would leave the battlefield while there are six or more creature remain exiled. Transform into one of them instead.