Lisa: Pulsating Witch

As a Librarian who has read through tens of thousands of volumes, of course it's trivial for me to remember how to win...

Pulsating Witch

1

(Passive) After this character takes DMG: If this character has no more than 7 HP, they gain 1 $[K310]. (Once per Round)

Source: Reward for inviting Lisa to a duel at The Cat's Tail and achieving all corresponding challenge objectives