[Menarker]

^^ Once in my gameboy game, I had my Togepi fighting against Gardenia the grass leader once all my other pokemons were knocked out. Tried using Metronome while I was in a pinch. Ended up with Sacred Fire on the grass type. ^^ Gotta love it when a gamble goes your way.

But yes, it's unpredictable and randomness is something you usually want to minimize. For the purpose of this RP, choosing a random move is nigh impossible to do with any degree of ease. I personally won't be putting that move in anyone's movesets.

Anyhow, to explain what is meant by sleep-talk, you could also replace it with "Sleep-walk" or any other sort of action where your mind subconsciously is acting without full knowledge. >_> There are many real life examples and many rumors too such as the guy who was accused of raping someone and his only "defense" was that he was asleep if he did it, and thus has no recollection of the act. Anyhow, I digress...

Anyhow, Sleep Talk has a neat trick with a certain someone with an Ursauring with Guts ability (Increases your attack stat when afflicted with a status condition). Ursauring falls asleep with Rest and heal up any damage it took and triggers Guts ability. When he uses Sleep Talk, he selects one of his other moves, Facade which does double damage when the user has a status affliction. So basically, the moveset has a Gut boosted Ursauring using a move that is 140 power before STAB bonus, and whom can't be stopped in combat by putting it to sleep. (It makes him stronger in fact!)

Alternatively, one can put it on a Milotic, and increase its defense when it is asleep (Marvel Scale ability), making it even more difficult to knock out. ^^