Here's how to do it:
1. Obtain a Shiny Stone: You can find Shiny Stones in various ways depending on the Pokemon game you're playing:
* Wild Encounters: Some Pokemon games allow you to find Shiny Stones in the wild by searching specific locations.
* Trading: You can trade with other players to acquire a Shiny Stone.
* Breeding: In some games, you can breed Pokemon that have a chance to hold Shiny Stones as their held item.
* Gifts: Some games may offer Shiny Stones as gifts for completing certain tasks or achieving specific milestones.
2. Use the Shiny Stone: Once you have a Shiny Stone, simply use it on your Gloom. This can be done by interacting with the Gloom in your party menu or by using the "Hold" function in your items menu.
3. Evolution: After using the Shiny Stone, Gloom will evolve into Vileplume.
Remember that the method of obtaining a Shiny Stone might vary across different Pokemon games, so make sure to check the specific game's guide or online resources for the best way to acquire one.