The Dark Treant

Boss Monster (This creature counts as both a player
and a creature. It is immune to everything a player is
immune. If attacked, other creatures may intervene
and block the attackers.)
Fruits of Corruption: {b/g}{b/g}: Deal 1 damage to all
attacking creatures. For each attacking creature
create a corrupted fruit token with: "{1}, sacrifice
this token: All attacking creatures get -1/-0 until
end of turn." Use this ability only once per turn.