We don't know exactly how you'll get this card yet - it may be an inclusion in all drops as their bonus card, or it could be an extra for spending over a certain amount
That being said, Amber is incredibly versatile, and that versatility really shines when combined with other Ink types like Steel to win games quickly or cause damage while taking advantage of constant healing
Keep in mind that all of these combos rely on pulling cards you only have one of in the deck, so you won't be able to reliably play all of these combos every game
Crystals are more likely to see play in 2+ color decks than the Medallions
This card could add some seriously interesting new strategies to existing decks that dont like to be challenged, and would be especially impactful when combined with cards like Prince John from Rise of the Floodborn that also have Ward
This makes it very easy to ramp her up to an incredibly high power which is dangerous for your opponents given she also has Lifelink which heals you for all damage she deals