You ignite a magical blaze onto an object within range. You are unaffected by this spell, as is any creature that wears or holds the object (if small enough to hold).   For the duration, the blaze pulses flames in the area within 10 feet of it. When a creature enters the area for the first time on its turn or starts its turn there, it must make a Dexterity saving throw. A target takes 2d8 fire damage on a failure, or half as much on a success.   When the spell ends, the blaze erupts. All creatures within 20 feet of it must make a Dexterity saving throw. A target takes 4d8 damage on a failure, or half as much on a success. This effect occurs even if the spell ends due to you losing concentration, regardless if you did so willingly or unwillingly.