By “new 5e rules,” do you mean 5.5e released in 2024? If so, DM Inspiration is not new to them, and was in 5e when it originally released in 2014. I’m not familiar if there were changes made, though, as I don’t play dnd anymore.
I think before it let you roll with advantage while the new rules lets you reroll afterwards if you don’t like the results. I’m not super familiar with the pre 2024 rules though.
By “new 5e rules,” do you mean 5.5e released in 2024? If so, DM Inspiration is not new to them, and was in 5e when it originally released in 2014. I’m not familiar if there were changes made, though, as I don’t play dnd anymore.
I think before it let you roll with advantage while the new rules lets you reroll afterwards if you don’t like the results. I’m not super familiar with the pre 2024 rules though.
I think you’re correct on the old rule. You had to declare in advance that you were spending it. No idea on the new rule though.