Hawk Diesel
Adventurer
I think compared to other cantrips, an auto hit cantrip that deals 1d4 force damage is fine. It won't break the game by any means. But I agree with @Saelorn. It's a boring cantrip. Some players may be drawn to the auto damage, but I don't expect by any means that it would be something that every caster would feel compelled to take it. And lets also remember that without an attack roll you have no potential to score a critical hit.