Latias can Mega Evolve into Mega Latias if it is holding a Latiasite.
Mega Latias is a part of the Overused (OU) tier of competitive battling. With a typing that allows it to check numerous threats in the tier, such as Manaphy, Keldeo, and Breloom, Mega Latias is greatly appreciated for many different team archetypes. It is considerably bulky which makes it good for a support role on teams. Mega Latias is best used as a Calm Mind set up sweeper where it uses its great bulk to check a number of threats while acting as a solid wincon for bulky balanced teams. A defensive set with Ice Beam and Thunderbolt covers its bases against many common balance Pokémon, such as Gliscor, Landorus-T, and Skarmory, while maintaining its health through Roost. It can use Reflect Type to avoid being easy Pursuit bait and have a better matchup against Heatran and Ferrothorn or Thunder Wave to cripple opposing set-up sweepers like Tail Glow Manaphy. However, Mega Latias is not flawless, as it can be easily walled by common Fairy-types and Steel-types like Clefable, Mega Gardevoir, Klefki, and Scizor. It can be susceptible to Pursuit trappers if it chooses not to run Reflect Type, and its Psychic-typing does bring weaknesses to Ghost and Dark attacks, both of which are common in the tier.
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