Daemonic Reconstruction

A creature you touch regains 4d12 hit points. When the spell ends, the creature must make a Constitution saving throw taking 4d12 slashing damage on a failed save.

At Higher Levels: When casting this spell using a spell slot of 3rd or 4th level, you can maintain concentration on this spell for up to 1 hour. When casting this spell using a spell slot of 5th level or higher, you can maintain concentration for up to 8 hours.