if you take terikon cobalon verizon and keldeo to the moor of iccerus the is a women that will teach all of them sacred sword. i think when you use the move he changes but otherwise im not sure
Keldeo changes to Resolute Form once it learns its signature move, Secret Sword however it is not possible for Keldeo to change to Resolute Form in Pokémon Black and Pokémon White even though it is capable of learning Secret Sword. Black & White - take Cobalion, Virizion, Terrakion and Keldeo to the Moor of Icirrus and then speak to the old man there. The trio will teach Keldeo the move. Black 2 & White 2 - take Keldeo to Pledge Grove which is located behind Alder's house in Flocessy Town. Touch the rock at the end and the rock will remind Keldo the Secret Sword attack. Once it learns Secret Sword, it will instantly switch into its Resolute Form.
You will need an event witch has only came out in japan or some other country but not in north america, if you want to teach your keldeo *somthing* blade witch is a good attack, no not leaf blade. You need to go to the moor of icarus with keldeo, terakion, coballion and varizion in your party and terakion varizion and coballion will teach keldeo *something* blade.
they are secret bases you need to teach a Pokemon secret power first to use them
You can teach a Pokemon 'Secret Power' and make a secret base. Pimp it out to make it homely.
Get the TM secret power teach it to a Pokemon then find either a tree with vines, an indent in the wall or a big bush use secret power on these to create your own secret base.
well they are secret bases but you need to teach one of ur Pokemon secret power(tm43), and u can get it in slateport city at the open market!(In Pokemon Sapphire).
If you bring the event Pokémon Keldeo, as well as the Pokémon Cobalion, Terrakion and Virizion to the moor, you'll get to be able to learn about the quad's history and teach your Keldeo a special move.(route 8 WHERE IRRICUS CITY IS)
you teach a Pokemon secret power and you go up to a round tree, a hedge (the round type) or one of those random square holes in caves and use secret power!
You can teach a Pokemon "Double Edge" in sootopolis city... There will be a girl in the Pokemon center and she will teach it to one of your Pokemon.
Blastiose can't learn Secret Power naturally, so you have to find Secret Power as a TM then teach it to your Blastiose. Then, as you would know by now, when u teach it Secret Power, you will have to delete a current move because a Pokemon can only know four moves. When it asks you to delete a move, delete Bite.
No teach it moves like psychic, ice beam, thunderbolt and flamethrower.