GEN VI: Help with getting mega evolving Pokemon please

[Doctor Floptopus]

Please can some kind soul help me? There are a number of y exclusive pokemon that I need for my mega stones, plus I need to evolve some others. Can anyone help me? I don't have a metal coat, either.

 

[Toa of Gallifrey]

I can give you Electrike, Larvitar, Skrelp, Heracross, Spritzee, Purrloin, Shellder, Throh and the gen 6 fossil opposite of the one you picked (basically all Y exclusives minus the gen 1 fossils) and help with evolutions. I can't spare a Metal Coat but you can get it in the Pokeball Factory or from Balloon Popping in the Pokemilage Club in the Global Link. FC and IGN in my sig, can you give me yours? In return for the Y exclusives you can give me anything (I'd rather Pokemon that can't be found in XY excluding Friend Safari, Cyndaquil or the Unova starters but it's alright if you don't have them).