You point at any creature withing a 60-foot range that is visible to you and chant the name of the spell, at this moment you can choose to roll up to 4d8 damage, with a minimum of 1d8 damage, to the creature but you also take half of the damage rolled rounded up.

You and the creature must make a constitution save (DC: 15), If the caster passes, the caster takes no damage. If the target passes, the target takes half damage rounded up.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 2d8 for each slot level above 1st