Ability · Gen 9 · 1 Pokémon
Hadron Engine
On switch-in, summons Electric Terrain. During Electric Terrain, Sp. Atk is 1.3333×.
Hadron Engine was introduced in Generation 9. 1 Pokémon and forms can have it.
Pokémon with Hadron Engine
As a regular ability (1)
MiraidonHadron Engine FAQ
What does Hadron Engine do?
On switch-in, summons Electric Terrain. During Electric Terrain, Sp. Atk is 1.3333×.
Which Pokémon have Hadron Engine?
1 Pokémon and forms can have Hadron Engine: Miraidon.
Effect text from Pokémon Showdown (MIT); which Pokémon have it from Showdown's Pokédex, cross-checked against PokéAPI. Unofficial fan site.