Emerald Shard

What it does: Unlocks Zapdos and Regigigas on maps. Unlocks Shiny/Dark Turtwig in Secret Swap.

How to use: Attach it to your starter and search the maps. Swap your starter holding it for a low chance to get Shiny/Dark Turtwig.

How to get it: Combine 10 Emerald Fragments at the Research Lab