Red Dragon Inn Allies: Ozrik the Adept - Rules of Play says:
The Red Dragon Inn: Allies - Ozrik expands the party at the Red Dragon Inn with a brand new elementalist, introducing a new elemental power mechanics that allow Ozrik to spend cards for bonus effects! The Red Dragon Inn: Allies is a 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.