Search your library for a card with the same name as that card, reveal it, put it into your hand, then shuffle your library
Lumiere is really only playable in a ramp list and even then you can probably find something better to spend 7 ink on
This works well if you can repeatedly flicker cards like Pierce Strider to drain your opponents' life totals or Seller of Songbirds to make a bunch of evasive tokens
Number 36 Language English Not Legal Formats Alchemy, Brawl, Commander, Competitive Brawl, Historic, Legacy, Modern, Pauper, Pioneer, Standard, Timeless, Vintage Rulings (2/29/2020) If Enter the Dungeon is cast during a subgame, a sub-subgame begins, preferably under a new, smaller table, but do what you can
If you're drafting Temur, you'll want a healthy number of 4-power creatures in order to make the best use of your ferocious cards
Where this deck might struggle is when playing against other combo and aggressive strategies