Flame Body in Pokémon Black & White

Contact with the Pokémon may burn the attacker.

Has a 30% chance of burning attacking Pokémon on contact.

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.