>>19503708That'll do, mate. Greninja can't take a hit anyways, the only IVs it crucially needs are Speed and an offensive stat (Atk/Sp.Atk).
Congrats!
>>19503696Anywhere that rain is uncommon, really.
Here's a list with all the things you can find in hordes.
http://www.serebii.net/xy/hordes.shtml>>19503740Anything will do really, whatever you have to spare, be it Luvdisc or breeding leftover. Just ask for a lvl 1 male Gible so you don't get sniped as quickly.