Rune Prison

You channel pure runic power around a creature you can see within range of the spell. The target must make a Constitution saving throw. On a failure, it takes 3d10 energy damage and is restrained for the duration of the spell. At the start of each of its turns, the target can make a Constitution saving throw. On a success, the spell ends.

At Higher Levels. When you cast this spell by spending mana points equal to a spell of 4th level or higher, the damage increases by 1d10 for each spell level above 3rd. When cast as a spell of 5th level or higher, this spell’s damage becomes runic.