I think this card's achievement indicates a bigger trend: This set was hugely popular, from bottom to top
Not to mention the cuteness of the four "Exosister" girls and the "interaction" elements that create mini-synergies between specific Exosisters, the setting behind the cards, such as the devastated world view glimpsed in the background of the illustrations and the story of them transforming into exorcists to fight evil spirits, creates a pretty good atmosphere
Note that Liliana isnt the only thing that forces everyone to discard a card
The Mulcharmies and specifically K9-17 Izuna and K9- Lupis really do help the Deck going second
You Can Bet on It
Leyline of AbundanceLeyline of Abundance (29,915 Inclusions, 1% of 2,135,759 Decks) Besides Leyline of the VoidLeyline of the Void, Leyline of AbundanceLeyline of Abundance is the only Leyline to have seen some (extremely limited) cEDH play, prior to Orcish BowmastersOrcish Bowmasters ensuring that any deck playing mana dorks would be blasted back to the stone age on a regular basis