Unlimited Blade Works: The Guide to the Ultimate Paladin/Sorcerer Multiclass

[Waterdeep Merch]

Smite doesn't count as a spell I thought? How would you empower it?

You can empower spell smites, like Wrathful Smite. I haven't done any looking into the damage for how closely that gets spell smites to equal a quickened GFB smite, but I'd imagine it's close enough so long as you also wanted the rider effect.