In the Planeswalker Novel Agents of Artifice, Liliana is by turns Jaces lover and betrayer, a familiar pattern from hardboiled entertainment where detectives get hired, seduced, and left for dead
This Artifact has the potential to generate lots of energy quickly and is quite powerful in conjunction with Cayth
Artistic Refusal: Free spells are powerful, and while this will more often be two to three mana, the fact it can be free is worth noting
Untimely Malfunction is likely strongest as a reactive spell, but it still has utility outside that small window of time, and thats why I want to see more like it in the future
Black benefits in particular thanks to the tendency to have permanents with multiple black mana symbols in order to make them more difficult to splash into other decks
I find it also puts you in the light of an ally for a while since you "assisted" in removing a threat or two