Charro Negro

Deathtouch, haste
When Charro Negro enters the battlefield, it deals X
damage to each creature an opponent controls,
unless that opponent pays {x}.
At the beginning of your end step, if Charro Negro entered the battlefield this turn, you create a gold
token with "Sacrifice this artifact: add one mana of
any color" for each creature put into your
opponent's graveyard this turn.