Generation Iii
Flame Body
Burns the foe on contact.
Detailed Effect
Whenever a move makes contact with this Pokémon, the move's user has a 30% chance of being burned. Overworld: If any Pokémon in the party has this ability, each egg in the party has its hatch counter decreased by 2 (rather than 1) each step cycle, making eggs hatch roughly twice as quickly. This effect does not stack if multiple Pokémon have this ability or Magma Armor.
Pokémon With Flame Body
23 canonical Pokémon forms can have this Ability.

Magmar
Slugma
Magcargo
Magby
Magmortar
Litwick
Lampent
Chandelure
Larvesta
Volcarona
Fletchinder
Talonflame
Carkol
Coalossal
Coalossal Gmax
Ponyta
Rapidash
Moltres
Heatran
Sizzlipede
Centiskorch
Charcadet
Centiskorch Gmax