Creation's Golden Wrath

The Golden Flame of Creation boils from the caster's eyes until it completely surrounds their head. Make a ranged spell attack against a target you can see within 120ft. On a hit, two spiraling bolts of golden flame burst from the depths of the casters' fire, lancing the target. The target takes 10d8 radiant damage and is marked by the Golden Flame of Creation for the duration of the spell. The radiating pain of the mark causes the target creature to roll a d8 and subtract it from any saving throws it makes. Creatures resistant or immune to radiant damage suffer no ill effects from the mark. Creatures vulnerable to radiant damage roll 2d8. If the target is killed while marked, they erupt in golden flame, all creatures within 10ft must succeed a dexterity save vs the caster's spell save DC or take 5d8 radiant damage, taking half on a success. If the caster fails a concentration check to maintain this spell the Golden Flame of Creation rages out of control dealing 5d8 radiant damage to the caster before dissipating. This damage cannot be reduced.