A copy of the Lillie card rated at a Gem Mint 10 condition by grading specialist PSA sold on June 27th for a record $108,000, more than quadrupling the $26,000 paid for another PSA 10 copy of the card in November 2022
There are enough merfolk to fill a deck with just that creature type, which is always important for fielding a strong deck based on a single creature type
Specific mythics are 1/75
Well, if you can get it onto Elenda, the Dusk Rose, or Elias il-Kor, Sadistic Pilgrim, you might have a good time
Same happens for cards
The deck has plenty of cool Flying payoff as well like Watcher of the Spheres for ramp, Errant and Giada for draw, Jubilant Skybonder for protection, and Lofty Denial for countermagic