I used it in a deck with Ensoul Artifact that utilized Darksteel Citadels. It was decently fun, but I think it might have been a standard deck. It still could possibly work in modern though. Ensoul can be very potent and provides a quick clock possibly from T2 onwards when cast on Ornithopter's or things like that, Shrapnel Blast gives you the reach to finish the game.
Yup I used those in standard deck a while back too. Was fun. Because Affinity isn't everywhere right now, and disenchantment is usually 1-2 in the SB, could work well in current meta.
Thraben Inspector and Tireless Tracker are what I can think of.
Kuldotha Red (splashing white) is probably a good place for this card.
With cards like:
Bomat Courier, Court Homunculus, Signal Pest, Smuggler's Copter and also Thraben Inspector, Inventor's Apprentice/Toolcraft Exemplar/Ardent Recruit and Galvanic Blast/Dispatch.
Modern
URB Grixis Delver
GWB Abzan Company
RWB Mardu Burn
WB Martyr Proc