Oh, yes. We need much more, imo. It would help to increase the variety of monsters too. I could name some, but first I'd have to think how it would work on descent. A short sample, tough: lycanthropy. You should test something at the end of the quest and if fail, you becomes a lycan and turns against your group. An specific overlord card should also put this in test once used, at any point. The hero should be defeated and then revived to get back to normal. Something like that.
I like your idea on Lycanthropy, but instead of it being a condition, I say make one specific Hero:
Fenris The Cursed
Human looking Picture
Class:Scout
Attributes: 4 Speed. 10 Heart, 5 Stanima, Grey Die
Strength:2 Willpower:3 Awareness: 5 Knowledge: 3
Ability: Whenever Fenris the Cursed obtains any Heart, put a Moon/Beast Token on Fenris the Cursed. If Fenris the Cursed has 6 Moon/Beast Tokens, flip Fenris the Cursed's Hero Card. Remove any Moon/Beast Tokens if Fenris the Cursed is defeated.
Heroic Feat: Immediately Gain up to 6 Moon/Beast Tokens. Put a Hero token on this sheet as a reminder that this feat was used on this encounter.
Flipped Hero Card
Fenris The Unshackled
Picture of Werewolf like creature snarling.
Class: Scout
Attributes: 5 Speed, 14 Heart, 5 Stamina, Defense Black Die
Strength: 5 Willpower: 1 Awareness: 5 Knowledge: 1
Heroic Ability: Fenris the Unshackled may only use melee weapons. Add 1 Red Power Die to attack Rolls. Fenris the Unshackled must spend 1 Moon/Beast Token to perform an action. If Fenris the Unshackled has 0 Moon/Beast Tokens, gain Fatigue up to Fenris the Unshackled's Stanima and flip over this hero card.