Fabbronzo, Caso Umano

At the beginning of your upkeep you may pay {w}{u}, if you do create a 1/1 blue and white Caso
Umano token with "Whenever a creature is dealt combat damage by Caso Umano, tap that creature,
it doesn't untap during their controller's next
untap step".
Whenever Fabrizio, Casi Umani Collector deals
combat damage to a creature, tap that creature, it
doesn't untap during their controller's next
untap step.