BanishmentBanishment requires a specific material component:
Anan item distasteful to the target
So does Summon Greater Demonsummon greater demon (XGtE, p. 166):
Viala vial of blood from a humanoid killed inwithin the past 24hrs24 hours
I thought I had seen this question here before, but I couldn't find it to double-check, so I'm asking again.
Are these components with unique conditionsattributes assumed to have a cost? Or can they be replaced by a component pouch or arcane focus?
My interpretation is that costcost isn't just gold, - it is any sort of condition on the item (so, distasteful items or blood with timer requirements have a cost). Therefore, both these spells would require specific components to be cast. Is my interpretation correct?