What is a good Ev Spread for my Mega Absol?

Question

It has a Naïve nature and knows Night Slash, Play Rough, Flamethrower, and Thunderbolt.

Answer 1

I would say that you can run 252 Speed / 128 ATK / 128 Sp.Atk for the equilibrated spread, although I would rather use a fully physical Absol.
You can also run Fire Blast > Flamethrower because it can OHKO Ferro, Forre and Escavalier. I am not sure about Flamethrower's capacity.