In the meantime, you can still get a Shiny Meltan in the Let's Go titles. The special Mythical Pokemon is appearing in Pokemon Go again until May 5, and if you capture one, you can transfer it to. 1. Catch combos heighten your chances of encountering a shiny Pokemon. If you catch the same species of Pokemon in a row, you'll start racking up a catch combo. The higher your catch combo, the.