Carabara, Fanged Pharaoh

Primal Instinct (Whenever this creature attacks, it
gets +3/+1 until end of turn.)
Deathtouch
Whenever a creature your opponent controls
dies, add X {g} or {b}to your mana pool, where X
is half that creatures converted mana cost
rounded up. You don't lose this mana as steps
and phases end.