Murkrow

You may cast Murkrow from your graveyard if you sacrifice a Gold or Treasure token in addition to paying its mana cost to cast it.
When Murkrow enters the battlefield, each player discards a card.
Flying, first strike, protect from wizards.
Whenever another creature dies, each player draws a card, then discards a card.
Discard a card: Create a Treasure token.(It's an artifact with "{t}, Sacrifice this artifact: Add one mana of any color.")