New Deathrite Shaman

Deathrite Shaman ETB with a Decay counter if {b} was spent to cast it,
or a Growth counter if {g} was spent to cast it.
{t}: Exile target land from a graveyard, add one
mana of any color.Active only if this creature has
a Growth counter.
{b}{t}: Exile target non-land card from a graveyard,
each opponent loses 2 life.
Activate only if this creature has a Decay counter.