i think it was Northwind Field or mt. Faraway but im not 100% sure
find it in a dungeon
You find Kyogre at Stormy Sea on 40F.
u get it at wyvern hill
Tiny Woods
35 floor of wyvern hill, with a key on a locked door. Or find a special wonder mail.
You can find one in Solar Cave.
You have to be lucky and find them random in dungeons
wondermail
35 floor of wyvern cave, be sure to bring a key and then unlock it. Or find wondermail on google.
you beat mystery dungeon red rescue team after you prevent the meteorite and defeat RAYQUAZA!
in the sky tower
ya it works