Fantastical Exploration

When Fantastical Exploration enters the battlefield, create three colorless Treasure artifact tokens with "{t}, Sacrifice this artifact: Add one mana of any color to your mana pool."
Whenever you draw a card except for the first one you draw in each of your draw steps, create a colorless Treasure artifact token.
Why are you stopping here? There might be twice as much loot just over the next hill.