Ruaww, Misleading Murderer

Whenever another creature dies, investigate.
(Put a colorless Clue artifact token onto
the battlefield with, "{2}, sacrifice this artifact:
Draw a card.")
Whenever you sacrifice a Clue, you may
instead mill a card rather than draw. If you do,
each opponent sacrifices a creature with the
same converted mana cost as the milled card.
If no-one can, put the milled card into your
hand.