Cresselia on Citra? ORAS

Hello Guys. I’m on my jorney to catch all the gen 6 pkmn… I’m sitting on 620 right now and got me thinking…

Is it possible to get Cresselia in ORAS? I saw people using the PSS method to summon more Islands (Which seems not work on citra) and all the videos show people using a real 3DS to catch Cresselia

I’m asking this dumb question because I’m about 40 days of constant Isle hunting and so far I didn’t got the Crescent Isle :frowning: