FrogReaver
As long as i get to be the frog
Even that seems a waste of time. Just dual wield double your chance to sneak attack. Fighter level splash and get Dex to damage off hand as well.
Dual Wield Doesn't double your chance to sneak attack. It gives you 2 independent chances which quite often can result in maybe a 30% or so additional chance of sneak attack.
Consider Greenflame blade at level 11 = 1d6+5+2d8+6d6 = 38.5*.7= 26.95
VS dual wield rogue at level 11 = 1d6+5+1d6+1.3*(6d6) = 39.3*.7 = 27.51
Level 11 against low AC opponents Greenflame is better. Against High Ac opponents it's worse. The effect it provides is a nice addition.
By level 17 it's better but not by much. It's not worth taking magic initiate for unless you want to try Booming Blade hit and run tactics which IMO won't be very effective but might be very fun.