how to tell what set a lorcana card is from My Cards Are How to Play Disney Lorcana:

Characters become Exerted when challenging an opposing character

Into the Inklands might have been the least popular set with collectors due to its huge print run and wide availability, but Enchanteds like Kida - Protector of Atlantis are starting to gain momentum

It is worth noting that this Flotsam would also work with Jetsam - Ursula's Spy from the first set, and if you had both Jetsams out together, this Flotsam would have both Ward and Evasive

She can quest for two lore and has Support , so when she quests, her challenge power of four is added to another character, effectively creating a powerhouse out of another character to take down big characters

As you have access to the Ink ramp of Sapphire, try upping the count of those cards

The enchanted cards use a unique holofoil treatment too