22.0 Known Issues

[anon43486798]

That is most likely intended as per:

@Aelathera

Unable to use specific cards in Adventure Missions
Certain card effects are disabled while in Adventure Missions. This is to prevent them from trivializing all of the encounters. Some examples include:

• Mindbreaker
• Sideshow Spelleater
• Grizzled Wizard

Hearthstone Common Issues