Wrath of the Golden Lich

You create two two-pronged spears of light above you which then turn to face one another. A small sphere forms in the gap between the two, pulsating with radiant energy. The spears last for the duration. When you cast this spell, you can command the sphere to fire a beam of bright light at a creature, loose object, or structure within range. Make a ranged spell attack against the target. On a hit, the target takes 8d8 radiant damage and if the target is a creature, it must make a Constitution saving throw. On a failed save, the creature is blinded for 1 minute. A blind creature can make a Constitution saving throw at the end of each of its turns, ending the effect on itself on a success.

As a bonus action on your turn, you can make an attack with the beam again.

When this spell is cast or as a bonus action on subsequent turns, instead of attacking with the beam, you can instead choose to combine both spears, resulting in a brilliant flash of light, leaving behind one massive 30 foot long spear. You can then direct this spear at a creature, loose object, or structure within 500 feet. Make a ranged spell attack. This attack ignores half and three-quarters cover. On a hit, the creature takes 20d8 radiant damage and if the target is a creature, it must make a Constitution saving throw. On a failed save, the creature is blinded for 1 minute. A blind creature can make a Constitution saving throw at the end of each of its turns, ending the effect on itself on a success. Once this attack has been made, the spell ends.