Sword of Spirit
Legend
You going to be having your players make concentration checks on spells that all the enemies have saved against as well?
Not unless the spell somehow has an ongoing effect. I'm not sure how anything I said would imply I would. I was claiming basically the opposite. You can't concentrate in ignorance. If the spell takes up your concentration you know it. If it doesn't, you know it doesn't. In the instance of a multi-target spell, you'd know if they all made their save, because your concentration wouldn't be there.