TM100 (item)

Effects

TM100 teaches a move to a compatible Pokémon. TM100 is:

Game locations

X​/​Y
Coumarine City (far north, take the TM quiz)
O.Ruby​/​A.Sapphire
Slateport City (Slateport Market - $5,000)
Sun​/​Moon
Hau'oli Cemetery (northeast)
Ultra Sun​/​Ultra Moon
Hau'oli Cemetery (northeast)

Game descriptions

X​/​Y
O.Ruby​/​A.Sapphire
The user tells the target a secret, and the target loses its ability to concentrate. This lowers the target’s Sp. Atk stat.
Sun​/​Moon
Ultra Sun​/​Ultra Moon
The user tells the target a secret, and the target loses its ability to concentrate. This lowers the target’s Sp. Atk stat.