COVID-19, Ultimate Plague

Indestructible, Defender
When COVID-19 enters play, put a -1/-1 counter
on each creature that entered the battlefield before
this creature. If that creature would die, put that
-1/-1 counter on two other creatures.
When a creature with a -1/-1 counter blocks or is blocked, put a -1/-1 counter on that creature/creatures and you lose 2 life.