Leyris, Etherium Crafter

Flying
Whenever Leyris, Etherium Crafter deals combat damage to a player, create a colorless artifact token named Etherium Cell with "{t}, Sacrifice this artifact: Add one mana of any color to your mana pool."
{1}, Sacrifice an artifact named Etherium Cell: Create a 1/1 colorless Myr artifact creature token.