
[OVERVIEW]
Mega Altaria's excellent defensive Dragon / Fairy typing and solid bulk allow it to switch into some of the most threatening offensive threats in the tier, most notably Ash-Greninja, Tapu Bulu, and Volcarona. This in conjunction with its access to Defog allows it to remove entry hazards versus many of the most prominent users in the tier, including Landorus-T, Heatran, and Ash-Greninja. Mega Altaria can also spread paralysis with Body Slam, supporting slower wallbreakers such as Tapu Lele and Kyurem-Black and crippling opposing setup sweepers like Hawlucha and Volcarona. However, after it Mega Evolves, Mega Altaria is grounded and liable to Toxic Spikes, so it's highly pressured to remove entry hazards and check the threats that it's supposed to at the same time, leaving it easily overwhelmed. Mega Altaria is difficult to fit onto teams due to it facing stuff competition from other Defoggers like Mantine and Gliscor, which have more utility overall, and it is still fairly weak despite its attacks being boosted by Pixilate, leaving it walled by common bulky Pokemon like Toxapex, Ferrothorn, and Clefable.
[SET]
name: Defog
move 1: Body Slam
move 2: Earthquake
move 3: Defog
move 4: Roost
item: Altarianite
ability: Natural Cure
nature: Impish
evs: 248 HP / 176 Def / 68 SpD / 16 Spe
[SET COMMENTS]
Moves
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Body Slam is a reliable STAB move that also discourages Pokemon that normally switch into Mega Altaria like Kartana and Toxapex from switching in due to Body Slam's ability to paralyze foes to provide Speed control for its team. Earthquake provides Mega Altaria with solid coverage to pressure Pokemon that normally beat it like Toxapex to prevent them from constantly and mindlessly switching in, and Earthquake allows Mega Altaria to remove Stealth Rock versus Heatran. Defog allows Mega Altaria to remove annoying entry hazards like Stealth Rock and Spikes in order to ensure that its teammates don't take unnecessary chip damage. Roost allows Mega Altaria to maintain its health throughout the match and lets it more consistently check threats like Ash-Greninja and Heatran.
Set Details
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248 HP EVs and 68 Special Defense EVs ensure that Mega Altaria can reliably check Battle Bond Greninja prior to transformation, being able to beat it even if Mega Altaria switches into it prior to Mega Evolving with Stealth Rock up, and the rest of the EVs are used to maximize Mega Altaria's physical bulk in conjunction with an Impish nature, hitting a jump point in Defense, enabling Mega Altaria to beat defensive Landorus-T and Tapu Bulu. 16 Speed EVs ensure that Mega Altaria can outspeed maximum Speed Adamant Mega Mawile and hit it with Earthquake if need be. Natural Cure is the preferred ability on this set prior to Mega Evolving because it allows Mega Altaria to absorb Toxic from Toxapex while removing its Toxic Spikes without being crippled for the remainder of the game. Also, Cloud Nine is incompatible with Body Slam, so Natural Cure must be used unless Body Slam is forgone for a different move.
Usage Tips
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If the opponent has Toxapex or another Toxic Spikes setter that pressures Mega Altaria and there's no significant threat on the opposing team that Altaria needs to Mega Evolve in order to check, it's best to keep it in its regular form before removing entry hazards in order to prevent itself from being overly pressured by poison. Otherwise, it's best to Mega Evolve Altaria as soon as possible because it gets a significant improvement to both its bulk and defensive typing, shedding its weakness to Stealth Rock. Try to switch Mega Altaria into entry hazard setters that it beats like Landorus-T and Ash-Greninja in order to remove entry hazards without taking too much damage; however, make sure to scout for lesser used options like Toxic Landorus-T and Ice Beam Ash-Greninja. Be careful not to let Mega Altaria get worn down too much trying to remove entry hazards because its defensive utility should be prioritized over removing entry hazards, especially if no other Pokemon on the team can check an opposing offensive threat.
Team Options
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Defog Mega Altaria fits best on bulky offense and balance teams that appreciate a Defog user that beats Ash-Greninja in particular, especially those that rely on slower wallbreakers to break down teams. Magnezone is arguably the best teammate for Mega Altaria, as otherwise it becomes a very poor choice versus Ferrothorn entry hazard-stacking balance teams and can give up momentum to Mega Scizor, and it allows Mega Altaria to become more effective with its Steel-type counters being removed. A secondary method of hazard control that's immune to Toxic Spikes such as Choice Scarf Kartana or Landorus-T with Defog is appreciated as a teammate for Mega Altaria so that it isn't as heavily pressured by Toxapex. Similarly, Toxapex itself makes a useful teammate due to its ability to absorb Toxic Spikes, taking pressure off of Mega Altaria. Slower wallbreakers like Tapu Lele and Kyurem-B appreciate Mega Altaria's ability to spread paralysis and slow down opposing teams so that they aren't forced out by some opposing offensive threats. Ash-Greninja is a good teammate in particular because it can use Spikes to pressure many of Mega Altaria's defensive answers and in turn, Ash-Greninja benefits from Mega Altaria's Body Slam spreading paralysis, as it can break past many of its normal checks, most notably Toxapex, with paralysis in conjunction with Dark Pulse's ability to cause foes to flinch.
[STRATEGY COMMENTS]
Other Options
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Hyper Voice and Fire Blast can be used over Body Slam and Earthquake, respectively, to allow Mega Altaria to use Cloud Nine, allowing it to check Ash-Greninja on rain teams, but the utility of Body Slam is too good to pass up. A set with Dragon Dance can be used in order to set up and sweep teams, but it's usually a poor option due to Mega Altaria having a myriad of defensive answers and oftentimes being too weak to sweep teams. On the other hand, Mega Altaria can also use a utility set with Heal Bell on more defensive teams, but it often ends up being overloaded by opposing threats and faces tremendous competition from Mega Sableye on stall. Finally, Mega Altaria can try an offensive lure set with Hyper Voice, Fire Blast, and Earthquake, but this set is over-reliant on having super effective coverage to break through bulkier Pokemon.
Checks and Counters
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**Poison-types**: Bulky Poison-types such as Mega Venusaur and Toxapex can tank Mega Altaria's attacks while threatening Mega Altaria with super effective STAB moves and Toxic, respectively. On the other hand, Gengar can threaten Mega Altaria with Sludge Wave, but it has to be wary of switching into Earthquake and being paralyzed by Body Slam upon switch-in.
**Bulky Steel-types**: Bulky Steel-types like Mega Scizor, Celesteela, and Ferrothorn can wall any move that Mega Altaria wants to throw at them, but they have to be careful of being trapped by Magnezone, a common teammate of Mega Altaria. Ferrothorn in particular is problematic for Mega Altaria because it walls Mega Altaria and can set hazards versus it.
**Bulky Pokemon**: Pokemon with high natural bulk, such as Clefable and Gliscor, can oftentimes annoy Mega Altaria due to their access to reliable recovery and their ability to wall any move that Mega Altaria wants to throw at them. Variants of these Pokemon with Toxic are especially annoying because they can cripple Mega Altaria and prevent it from reliably beating opposing threats.
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