Nana, Darling Family Pet is the perfect card to partner with the likes of Rapunzel, Gifted Artist and Grand Pabbie, Oldest and Wisest - which both have abilities that trigger when damage is removed - thanks to the fact that she can remove all damage from another character whenever you play a Floodborn character
With Dark Knowledge, she allows you to draw a card when she quests, and Divination allows you to move one damage from any character to an opposing character whenever you draw a card
It appears that some fans are not happy about the errata, but all card games go through significant competitive changes to see the atmosphere as fun and friendly
including staples like Madam Mim, Snake
You can also use it multiple times a turn as long as you can pay
It is dependent on the strategy that the deck is intended for