TM18 is an item in the “All machines” category (TMs and HMs). It costs ₽10000.
In-game descriptions
| Ruby / Sapphire · Emerald | Raises the power of WATER-type moves for 5 turns. |
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| FireRed / LeafGreen | A heavy rain falls for five turns, powering up WATER-type moves. |
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| Diamond / Pearl · Platinum · HeartGold / SoulSilver · Black / White · Black 2 / White 2 · X / Y | The user summons a heavy rain that falls for five turns, powering up Water-type moves. |
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| Sun / Moon · Ultra Sun / Ultra Moon | The user summons a heavy rain that falls for five turns, powering up Water-type moves. It lowers the power of Fire-type moves. |
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| Let’s Go, Pikachu! / Let’s Go, Eevee! | After making its attack, the user rushes back to switch places with a party Pokémon in waiting. |
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| Sword / Shield | A wondrous wall of light is put up to reduce damage from physical attacks for five turns. |
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Move taught
| Red / Green · Blue · Red / Blue · Yellow | Counter |
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| Gold / Silver · Crystal · Ruby / Sapphire · Emerald · Colosseum · XD · FireRed / LeafGreen · Diamond / Pearl · Platinum · HeartGold / SoulSilver · Black / White · Black 2 / White 2 · X / Y · Omega Ruby / Alpha Sapphire · Sun / Moon · Ultra Sun / Ultra Moon | Rain Dance |
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| Let’s Go, Pikachu! / Let’s Go, Eevee! | U-turn |
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| Sword / Shield | Reflect |
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| Scarlet / Violet | Thief |
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| Legends: Z-A | Power-Up Punch |
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Where to find it
Sources : PokeAPI (items, item_flavor_text, machines) · atlas · pokeemerald species_info.h