Forensic Gadgeteer {2}{U}
Creature — Vedalken Artificer Detective
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.
click a line to search just that ability, click more to combine them
Cards that do something similar expected a card that isn't here?
Reports become test cases the matcher is graded against before an update ships. Delvefall isn't a chatbot guessing, it compares the printed rules text of every card with plain math, and examples like yours decide which differences should count.
Mutagen Man, Living Ooze 91%
$1.39#7204
"Activated abilities of artifact tokens you control cost {1} less to activate."
Tezzeret, Betrayer of Flesh 82%
$0.43#3819
"The first activated ability of an artifact you activate each turn costs {2} less to activate."
Hum of the Radix 82%
$0.49#22250
"Each artifact spell costs {1} more to cast for each artifact its controller controls."