Pokéball pattern Vivillon - #666 (Modest) : 26 / 31 / 30 / 19 / 26 / 31 HP Ghost
Keep or toss? I'm leaning toward keep. It's literally the best one I've gotten, and the only one I've received that is rated as outstanding by the judge.
Since you can't synch and you don't have any guaranteed IVs, you should aim for +Sp. Atk. or +Spe nature and 30/31 in Sp. Atk. and Speed, or a Hidden Power, instead of good IVs overall. Vivillon usually runs Focus Sash anyway.