Celestial Feyblade

As part of the action used to cast this spell, you must make a melee attack with a weapon against one creature within the spell's range, otherwise the spell fails. On a hit, the target suffers the attack's normal effects and takes radiant damage equal to your spellcasting modifier, and white holy light leaps from the target to a different creature of your choice that you can see within 30 feet of it, healing equal to half of the total radiant damage dealt.

At Higher Levels. At 5th level, the melee attack deals an extra 1d8 radiant damage to the target. Damage rolls increase by 1d8 at 11th level and 17th level.