Forensic Gadgeteer 57 (Murders at Karlov Manor)

Whenever you cast an artifact spell, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.") Activated abilities of artifacts you control cost {1} less to activate. This effect can't reduce the mana in that cost to less than one mana.

NM - $5.90
LP - $4.70
MP - $3.50
HP - $2.40
DMG - $1.50