Forgotten Trademarket

When Forgotten Trademarket enters the
battlefield, you may discard a card. If you do,
draw a card.
Whenever you discard a card, you may create
a Treasure Artifact Token with "{t}, Sacrifice
this artifact: Add one mana of any color."
{2},{t}: Sacrifice a Treasure Token. Make a copy
of this card and put it on the battlefield.