Gateway includes two 30-card decks, a game board, character standees, and additional cards to build standard 60-card decks
A starter deck is then the ideal start because this is a ready-made deck that can be played right out of the box
TL;DR Direct answer : The best Sapphire cards from Fabled to prioritize are Hades - Infernal Schemer, Aurora - Dreaming Guardian, Dig a Little Deeper, Mulan - Considerate Diplomat, and Cruella De Vil - Style Icon
This means he can survive almost any challenge while threatening to single-handedly close out the game if left alone for even two turns, making him a primary target for an opponent's removal spells
His other ability "Pounce" also means that Simba gains the "Evasive" trait, so he can also challenge characters with Evasive
Put the rest on the bottom of your library in a random order