The most valuable cards so far include Avatar Aang (Borderless) at around $135, followed by Badgermole Cub, Ozai, the Phoenix King, Sozins Comet, and White Lotus Tile, all ranging between $59-$65
This lets you play what is essentially a reanimator deck for instants and sorceries, focusing on those with flashback and jumpstart, and accruing value over time through repeated looting and recasting
Also, note that the range of the search is very wide and can go beyond her own theme - notably being able to grab defensive options like Effect Veiler if you dont want to grab a Forest card at the time
How To Identify What Set A Lorcana Card Is From To work out the set a Lorcana card was printed in, look at the bottom left corner of the card
Deep Sea Diva can summon another Level 2 Sea Serpent from your deck, enabling Synchro Summons