>>32034152I chainfished a shiny Milotic in ORAS, shit was amazing. Had her and a mega sharpedo as my duo. Luckily had a friend to evolve my shiny kingdra too.
To answer the original question, anything late-game. I don't use traded Pokemon for the most part, except in B2 since I NEEDED a Reuniclus. I wanted to use an Araquanid in Moon but didn't realize they spawned during daytime only (thought they were Sun exclusive since I don't google shit until after beating the game) so I used Wishiwashi instead, and my Golisopod never got a spiderbro. Postgame I SOS'd a shiny one, but haven't used it.