Heartfire Hero Unlike Cacophony Scamp or Fireblade Charger, Heartfire Hero hits each opponent, which feels like a must-include in the crowded Boros equipment EDH space
Izzet Charm It looks boomer-y, but Izzet Charm draws two cards at instant speed for 2 mana
And, if I put on 4x Surgical Extraction and 3x Extirpate I have lot of chances to draw it when I need it
Other cards like Jhoira, Weatherlight Captain might offer more consistent value in a similar deck, but The First Doctor could still see play in a more casual or thematic setting for Doctor Who fans
You can see how its affected other great TCGs as well, with many of them operating on a similar structure
Thieving Skydiver has Kicker and let us gain control of target artifact with mana value X or less (and can even attach it for free to itself if it is an equipment), while Thada Adel, Acquisitor on player combat damage trigger let us search that players library for an artifact card and exile it and until end of turn, we may play that card