The Stranded Soldier

Begin the game with this card revealed.
Only creatures you control gain "{3}: create
either a Clue token or Treasure token."
You can sacrifice four any combination of
Clue or Treasure tokens to create a
4/6 colorless artifact Ship token with
Crew 3, flying, vigilance and "you can
pay {2} rather than pay this Crew cost."
Win: Attack with 4 Crewed Ship tokens.