FrogReaver
As long as i get to be the frog
So it's +20 damage at 20th level? Every time? Sounds a might strong, even at per day (which I'm assuming applies to the cantrips as well). If the cantrips are at will and you want to add level to damage IDK know what to say.
firebolt vs longsword
4d10+20 vs 4d8+28 (assuming dueling style)
Makes them comparable to a fighter with extra attack (assuming no magic weapons)