The new PSS (Player Search System) will allow players to search for others locally or globally (via Wi-Fi) to battle and trade
X and Y designed so that players can be connected at all times
PSS is on lower screen of 3DS, tracks Friends, Acquaintances, and Passersby.
Other players appear on the PSS. Method 1: local wireless. method 2: internet
Passersby - PSS recognizes other players playing XY. If you interact with one of anyone on that list, they become an Acquaintance.
Split into Friends, Acquaintances and Passersby. Interact with Passersby and they become an Acq. Then you can register them as a Friend
Various options for battles. There is a default set, but you can change things re: special Pokemon and other rules.
Serebii Updates: Skrelp is a Poison- and Water-type Pokémon. Clauncher is a Water-type Pokémon. http://www.serebii.net/index2.shtml