Divine Ruin

This Spell is a Rare Spell this type of spell you need to find or unlock from a spell scroll or some other Source(optional rule)

You channel and focus your spells towards a creature you can see within range. The target must make a Dexterity saving throw. If the creature is able to have an advantage on spell saving throws, it loses that benefit against this spell the same applies to evasion. On a failed save the creature takes 15d12 radiant damage or half as much on a successful save. When you cast this spell, you may sacrifice any number of spell slots up to 3rd level to deal bonus damage equal to Triple the total number of spell slots sacrificed.

If you have the spell weave feat, you deal an extra 2 damage per point used