From the publisher's website:

When you first meet this soft-spoken young elf, you might be surprised to learn that she’s an adept adventurer; even more so that she’s often fighting on the front line. But then again, you don’t run into very many shapeshifting druids at the Red Dragon Inn… The Good: Erin’s always ready with a kind word and a healing chant to smooth ruffled feathers or mend wounded flesh. The Bad: When the drinks start flowing, Erin can turn into a tree. Have you ever tried out-drinking a tree? It’s not pretty. The Red Dragon Inn: Allies – Erin the Ever-Changing expands the party at the Red Dragon Inn with a brand new elven shapeshifting druid, introducing new mechanisms that allow her to take on multiple forms throughout the game. She has to carefully manage which form she is in for the situation as being caught in the wrong form at the wrong time can spell for dire consequences! The Red Dragon Inn: Allies is a new series of expansions for any standalone The Red Dragon Inn game. Each Allies set includes a single Character Deck, plus components to add a brand new character to your game.