I want viable cantrips post level 1.  Let’s work on that

Eldritch Might

You can’t beat the classics.

Prerequisites: Key ability score 15, caster level 6th, 6 levels in a class with a class spell list.

Benefit: Choose one 0-level spell you have that deals damage. When you deal damage with that spell, increase the damage by 1/2 your level.

Special: For every 3 levels by which your caster level exceeds 6th, you can take this feat an additional time and choose a different spell as the target.