I am getting back into pokemon btw... I also caught a Kyogre, Palkia, Latias, Mesprit, Azelf, Thundurus, and Cresselia!!! IN THE US/UM (Ultra Sun/Ultra Moon)GAME!!! though it was in Ultra Moon. I didn't even start Ultra Sun yet... My brother did with MY Ultra Sun and Ultra Moon. That was when I didn't want USUM at the time... But I wanted my USUM back but said I could pick one... and I finished Ultra moon in 2 weeks... While my regular moon took almost 2 years... Also, PRO TIP FOR USUM, When you do ULTRA WARP RIDE, Look for the Worm Holes with TWO RINGS AND A FLOWER AURA! THEY WILL GUARANTEE A LEGENDARY OR MYTHICAL POKEMON IF THEY'RE ANY LEFT IN THAT COLOR WORM HOLE! Ex. Entering a tier four (double halos/rings and a flower aura) blue worm hole, you will have a flash of white pop up when you enter the dimension, this means that a LEGENDARY/MYTHICAL POKEMON HAS APPEARED!!! SAVE YOUR GAME AND MAKE SURE YOU HAVE A LOT OF POKEMON BEFORE DOING ULTRA WARP RIDE!!! Make sure you have these following pokeballs:
Heavy Ball,
quick balls,
Ultra Balls,
Timer Balls,
Lure Ball,
Luxury Balls,
Possibly a master ball (if you have to use it, But use it wisely, you can also acquire these in the FESIVAL PLAZA LOTTERY SHOP; BIG DREAMS!!! Get the first prize!!!)
Level Ball,
Reapeat balls (for ultra beasts (white portals)),
Roto Catches (special rotom Power which increases catch rate),
and YOUR CHAMPION TEAM IF YOU HAVE ONE!!! THIS TEAM IS YOUR BEST CHOICE TO GET IT!!! MAKE SURE YOU HAVE POKEMON WITH THE SNOW WARNING ABILITY (summons hail), SANDSTREAM ABILITY (Summons sandstorm), HAIL MOVE (summons hail), SANDSTORM MOVE (Summons sandstorm), OR THE FALSE SWIPE MOVE (leaves the pokemon with at least 1 hp no matter what)!!!
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Sorry for having a lot... but this is all critical for success!!!