Chicken McNuggets 20

When Chicken McNuggets 20 enters the battlefield, create twenty Food tokens.
(They're artifacts with "{2}, {t}, Sacrifice this artifact:
You gain 3 life.")
—
If there are no Food tokens on your side of the
battlefield, you may sacrifice this artifact.
If you do, create a Hammer of Wrath a legendary
20/1 colorless artifact creature token with flying
first strike, trample, haste and indestructible.