T-15, the Spirit Carrier

Crew 4 and First Strike
When this card attacks, you may exile the top card of your library and you may cast it until the end of your turn.
{1}{b}: Create a 2/1 Black Train Conductor creature token.
{u}{b}{t}, If a Spirit creature you control would be destroyed you can exile it instead, when this card becomes a Artifact or Artifact creature return that card(s) to your hand.