Black Jack Barrow

Menace, haste
Whenever Black Jack Barrow attacks, create a
Treasure token. (It's an artifact with "{t}, Sacrifice
this artifact: Add one mana of any color.")
Sacrifice a Treasure: Flip two coins. For each
heads, you lose 1 life, mill 1, and discard a card.
For each tails, you gain 2 life, scry 1, and draw
a card. If both are heads or tails, create three
Treasure tokens.