There are 2 slots for the rare cards in every pack, they can either be: 2 rare cards 1 rare and 1 super rare 2 super rares 1 super rare and 1 legendary The enchanted cards are actually replacing the reverse-holo card in each pack, so the best value opening of Lorcana the first chapter can be: 1 super rare, 1 legendary and 1 enchanted card
Best for Value (Investing): Reserved List cards (like Dual Lands ) are the gold standard for stability
But it can also be used proactively, too
For small amounts of milling, its more efficient than Bruvac the Grandiloquent, and its excellent with some Persistent Petitioners
Based on this experimenation, it seems like the Sapphire/Steel deck is more aggressive , with new cards boosting Strength and increasing Resistance, while the Amber/Amethyst deck is more about mitigating and removing damage
Put an additional counter of that kind on that permanent