Costing six lore, Perdita, Devoted Mother, is most definitely a Lorcana card to be played later on in the game - not just because of the cost, but also because of the cards ability
Whilst rare always feels a little bit of a misnomer in trading card games, as theyre not all that hard to find (two cards in every pack are either Rare, Super Rare, or Legendary), they can make for some competitive cards

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They're also likely to be extremely sought-after and hard to find, and when they're bought out, resellers may sell them at inflated markups