Baleful Cur

When Baleful Cur dies, target creature you
control gains +1/+1 counters equal to Baleful
Cur's toughness, and target creature you don't
control gains -1/-1 counters equal to Baleful
Cur's strength.
"The howling never stopped, it mourned over its
master's grave endlessly. It hadn't even noticed its
own demise as it sat vigil every night."
— Royal Advisor Jakin.