Res Arcana
What if the Crypt or Sorcerer's Bestiary has no valid card to place?
The designer answered this directly in a BGG reply.
- Tom Lehmann · Designer · 2021-06-26
- Res Arcana rulebook · Rulebook · Powers
- Nobi · Community · 2021-06-26
You may still use the power. The cost is paid and the effect simply does nothing. If there are several valid cards you choose one, and if a legal target exists you must apply the effect.