TM99 (item)

Effects

TM99 teaches a move to a compatible Pokémon. TM99 is:

Game locations

X​/​Y
Laverre City (Defeat gym leader Valerie)
O.Ruby​/​A.Sapphire
Route 123 (center, from girl)
Sun​/​Moon
Vast Poni Canyon (2F, east after second cave)
Ultra Sun​/​Ultra Moon
Vast Poni Canyon (2F, east after second cave)
Sword​/​Shield

Game descriptions

X​/​Y
O.Ruby​/​A.Sapphire
The user damages opposing Pokémon by emitting a powerful flash.
Sun​/​Moon
Ultra Sun​/​Ultra Moon
The user damages opposing Pokémon by emitting a powerful flash.