These deliver strong value at lower prices: Aetherdrift Play Booster Box (~$129) cheapest entry point
Like most Pokmon cards, the value of Froslass depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Legends Awakened)
Nothing stabilizes a control deck like drawing five cards and gaining 5 life, often giving them all the resources needed to finish a game
You can quest with him and return a Merlin, Goat back to your hand, giving you four lore instantly, and allowing you to play the Goat again to immediately gain one more, and another when the Goat leaves play
Deal damage to an opponent equal to the number of creature tokens you control
If a recent archetype has arrived to compete with Sakazuki, it's undoubtedly Gecko Moria