Haunted Ship

Whenever Haunted Ship is crewed by a
non-Spirit creature, put a -1/-1 counter on
that creature. That creature gains "When
this creature dies, create a 1/1 blue and black
Spirit creature token with flying and lifelink."
Crew 4 (Tap any number of untapped creatures
you control with total power 4 or more: This Vehicle
becomes an artifact creature until end of turn.)