When Foreboding Steamboat enters the battlefield, each player chooses two nontoken, non-Vehicle creatures they control. Exile them until Foreboding Steamboat leaves the battlefield.
Whenever Foreboding Steamboat attacks, put a card exiled with it into its owner's graveyard. If you do,
investigate (To investigate, create a colorless Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.").
Crew 2
(Tap any number of creatures you control with total power 2 or more: This Vehicle becomes an artifact creature until end of turn.)