Originally Posted by Fat NixHex
Is it possible to do multiple items/abilities?
My friend, Happythetaco, who originally told me you can have more than 4 moves, had a test battle with me to see if it's possible.
If you try to have 2 items, only 1 is kept and the other item goes to the nickname, AND the pokemon takes the appearance of a Bulbasaur. For example, in the test match, a Magikarp had a Life Orb and a Leftovers. It held a Life Orb, took the appearance of a Bulbasaur (but it would still be a Magikarp) and it would be nicknamed "Magikarp @ Leftovers".
If you try to have multiple abilities, you'll only have 1 ability and the extra abilities will get deleted from import/export. A while back, I also tried to see if you could have more than 6 Pokemon, but the result was the same as Taco's test of multiple abilities, only 6 Pokemon showed and the others got deleted.
...So to put it simply, no you can't.