Whenever another creature you control dies, create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")
If you would create a Clue, Food, or Treasure token, instead create one of each.
({T}: Add {R}.)
{T}, Sacrifice two other creatures: Any number of target players each lose 2 life and sacrifice a creature of their choice. You add {B}{B} and draw a card.
Deathtouch When Ruin Rat dies, exile target card from an opponent's graveyard.
Destroy target artifact.
Deathtouch Morph—Reveal a black card in your hand. (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) When Ruthless Ripper is turned face up, target player loses 2 life.
({T}: Add {B}.)