A Latios set that is original while not outclassed by latias or is just "slap eq on lo latios" is really hard to think of.. But fuck it.
Latios (M) @ Life Orb
Trait: Levitate
EVs: 4 HP / 252 SAtk / 252 Spd
Timid Nature (+Spd, -Atk)
-
SolarBeam
- Draco Meteor
- Hidden Power [Fire]
-
Sunny Day
252 SpA Life Orb Latios SolarBeam vs. 180 HP / 0 SpD Tyranitar: 341-403 (88.34 - 104.4%) -- guaranteed OHKO after Stealth Rock
252 SpA Life Orb Latios Hidden Power Fire vs. 252 HP / 236+ SpD Jirachi in sun: 221-260 (54.7 - 64.35%) -- guaranteed 2HKO after Stealth Rock
252 SpA Life Orb Latios Hidden Power Fire vs. 252 HP / 168 SpD Ferrothorn in sun: 463-546 (131.53 - 155.11%) -- guaranteed OHKO
252 SpA Life Orb Latios SolarBeam vs. 252 HP / 0 SpD Politoed: 341-403 (88.8 - 104.94%) -- guaranteed OHKO after Stealth Rock
This serves as a band Tyranitar lure, which also has the ability to severely dent jirachi. Besides that, it also serves as weather control for weatherless teams, and backup sun for sun teams. ( It's 1 AM, sorry for short description. )
This set still has trouble with heatran, so make sure you have a good answer for that, but I feel like it has more general utility than EQ sets do.
You can use colbur berry if you want to have a chance at beating scarf/support tar, but its at the cost of a significant amount of power, and you'll still get ohko'd by bandtar crunch