C19 Virus

Pay {3}{b/r}{b/r} when C19 virus enters the battlefield,
if you don't, sacrifice it.
Whenever a creature enters the battlefield or dies,
put a virus counter on C19 virus.
{t}add x mana of any color to your mana pool,
where x is the number of virus counters
on C19 virus.
{4}{t}Remove all virus counters from C19 virus.
C19 virus deals damage to each opponent and
each creature you don't control equal to the
total amount of counters removed drom C19 virus.