The Lorcana metagame is very diverse at the moment. You can play:
Amber/Steel songs: A strong midrange deck that uses Tinker Bell and Grab your Sword to control the board, and Beast and A Whole New World to draw an unbeatable number of cards.
Emerald/Steel discard: A strong midrange deck that uses Tinker Bell and Grab your Sword to control the board, and Beast and A Whole New World (sometimes) to draw an unbeatable number of cards.
Sapphire/Steel Wheel: A strong midrange deck that uses Tinker Bell and Grab your Sword to control the board, and Beast and A Whole New World to draw an unbeatable number of cards.
Amethyst/Steel midrange: A strong midrange deck that uses Tinker Bell and Grab your Sword to control the board, and Beast and A Whole New World to draw an unbeatable number of cards.
Ruby/Steel midrange: A strong midrange deck that uses Tinker Bell and Grab your Sword to control the board, and Beast and A Whole New World to draw an unbeatable number of cards.
Alternatively, you can play Ruby/Amethyst control 😂