Well. It kind of depends on how you see the spellcasting classes. I think the answer is different for each of them. I think it a perfectly wonderful roleplaying element you could employ for your Bard or your Sorcerer.
Spell Name School Casting Time Range Duration Components; Decompose (HB) Necromancy HB: 1 Action: Touch: 1 minute: V, S: Guidance: Divination: 1 Action: Touch: Concentration up to 1 minute