Rotom-H didn't have fire-typing in 4th gen, and I'm pretty sure Normal gets STAB on its Hidden Power too.
I think Lombre could have a niche as a bulky rain offense pokemon and weather renewer, since its STABs cover most of the metagame neutrally. Rain-boosted Hydro Pump hurts in NU no matter what SpAtk stat it comes from, and Giga Drain covers the smashers (though it doesn't stop them from passing, obviously).
Maybe a good spread would be as follows:
Lombre @ Eviolite
252 HP/200 Def/56 SpAtk
Modest / Rain Dish
Rain Dance
Hydro Pump/Scald
Giga Drain
Ice Beam
I think Lombre could have a niche as a bulky rain offense pokemon and weather renewer, since its STABs cover most of the metagame neutrally. Rain-boosted Hydro Pump hurts in NU no matter what SpAtk stat it comes from, and Giga Drain covers the smashers (though it doesn't stop them from passing, obviously).
Maybe a good spread would be as follows:
Lombre @ Eviolite
252 HP/200 Def/56 SpAtk
Modest / Rain Dish
Rain Dance
Hydro Pump/Scald
Giga Drain
Ice Beam