I have Pokemon Black, Pokemon Heart Gold, and Pokemon Diamond, and I'm trying to get a Calm Togekiss with Ability Serene Grace, and with the moves Air Slash, Aura Sphere, Body Slam, and Roost (for my Pokemon Black).
Air Slash and Aura Sphere I can get by evoloving, and Roost I can use TM 51 from Generation IV. But I don't know how to get Body Slam. Smogon says it can learn Body Slam, but I don't know how...