Thousand Moons Smithy // Barracks of the Thousand (The Lost Caverns of Ixalan 39) - Rare Magic: The Gathering Card

When Thousand Moons Smithy enters, create a white Gnome Soldier artifact creature token with "This token's power and toughness are each equal to the number of artifacts and/or creatures you control."
At the beginning of your first main phase, you may tap five untapped artifacts and/or creatures you control. If you do, transform Thousand Moons Smithy.