Trouble in PairsTrouble in Pairs (33,593 Inclusions, 5% of 694,274 Decks) With the initial hype of Trouble in PairsTrouble in Pairs, I was surprised to find it this low on the list
There's a lot of charm and quirks from the other games that have a high potential of being miss (WotC please make Sabin suplexing Phantom Train a card)
There are plenty of classic TCG tropes and tricks to draw on, so this and colorless cards ( still possible in the future ) present opportunities for changing deck building significantly Dual-Ink Cards Rules
It even has the magic text that will return it to your hand from the graveyard
Raffine, Scheming Seer Raffine, Scheming Seer has been an awesome creature in Standard in decks like Esper Legends
We've got a team of people working just on Lorcana's story