A-Train

Flash
Dash {1}{u/r}{u/r} (You may cast this spell for its dash cost. If you do, it gains haste, and it's returned from the battlefield to its owner's hand at the beginning of the next end step.)
A-Train can only be cast with its dash cost.
A-Train can't be blocked except by creatures with haste.
When A-Train enters, create a Treasure token.
When A-Train leaves the battlefield, draw a card.