Rivico, Perfect Newborn

Eminence — As long as this creature is in the command zone or on the battlefield, Phyrexians spells you control gain toxic 1.

Flying, vigilance

Whenever you cast a Phyrexian, create X 1/1 Phyrexian Mite artifact creature token with toxic 1
and "This creature can't block." where X is that
card toxic value.