pkmnlab

Roost

Flying · Status · 9 Pokémon in Reg M-B
Flying
Roost
TypeFlying
CategoryStatus
Base power
Accuracynever misses
PP5
Priority0

What it does

The user restores 1/2 of its maximum HP, rounded half up. If the user is not Terastallized, until the end of the turn Flying-type users lose their Flying type and pure Flying-type users become Normal type. Does nothing if the user's HP is full.

Who carrys it

9 of the 282 Pokémon measured on the Regulation M-B ladder carry Roost. The one that matters most is Mega Staraptor, which is on 11.3% of teams and carrys it on 59.9% of its sets. The full list is above, ordered by how much of the format each one is.

What it hits

As a Flying move it is super effective against Bug, Fighting and Grass, resisted by Electric, Rock and Steel. 4 other Flying moves appear in this format: Tailwind, Hurricane, Dual Wingbeat, Brave Bird.

Who could and does not

26 Pokémon legal in this regulation can learn Roost at all, against the 9 that actually bring it. The gap is the interesting number: it is the set of Pokémon that have the option and decline it. The most-played of those are Pelipper, Hydreigon, Talonflame, Aerodactyl, Vivillon and Dragonite — each of them measured on the ladder, each of them leaving this move on the shelf.

How concentrated it is

Across the ladder, Roost accounts for an expected 0.08 of the six slots on an average team, which makes it the 57th most-brought of the 126 moves this format runs. 86% of that comes from Mega Staraptor alone, so it is really one Pokémon’s move rather than the format’s. Its carriers are mostly Flying (6), Steel (3) and Dragon (3).

Where these numbers come from

Usage is Smogon's published statistics for the Regulation M-B VGC ladder, and the description is the one shipped in the Pokémon Showdown data set. Both are regenerated on every build rather than written by hand, so this page follows the format instead of trailing it. Take any of it to the team builder or the damage calculator.