Werebeast; flyer. Shera is such a master flyer that she is immune to harmful events and allies that affect flyers.
Copyrights:
TSR
Wizards of the Coast
Shera is an okay champion in most any deck, but is a must have in a werebeast deck.
Between her two immunities, Shera has all of the advantages of being a werebeast and a flyer but with few of the liabilities. Note that Shera's ability to fly is not conferred to her allies, although her immunities are.
Shera's immunities apply only to events and allies that specifically target flyers, such as the Noble Djinni (84/3rd) and Wind Dancers (275/3rd), not just events and allies in general.
If you play a Ravenloft deck, seriously consider this champion in conjunction with the dungeon card Under Castle Strahd (7/DU) which makes all of your Ravenloft undead. Shera can then use undead unarmed combat cards and gain other undead advantages.