This doesn't mean you should entirely ignore cards that cost less than four mana as there will always be some room to cast one, two, or three-mana spells, but you can afford to push your deck into the higher-costed cards with Ruby at the helm
To play Disney Lorcana TCG, each player will need a deck of sixty cards
Also available Fabled Kicks Off New Era for Disney Lorcana Featuring a collage of versions of beloved Disney characters called Glimmers, each of the six puzzles is themed to a color of magical ink that powers the realm of Lorcana
Each stack consists of 100 NM Pokmon cards assorted by common/uncommon, non-holo rare, and trainer
Then you cast Thought Scour (or Mental Note), targeting yourself
What are the case details you ask