Seriously just give me a number. I feel I'm close to it. If you want to calculate the odds it can easily be done using binom calc and inputting the number of attempts n and the  supposed ha odds which are 0.25. I am currently at 19 snivys which is equivalent to 0.0042 . Please tell me what I have to get at this point I feel like it will be easy since I have an effective 0% chance of contrary.

Ive got the same problem with gible 🥲

Hello there! I am sorry to hear that you are having issues catching a Hidden Ability Snivy with your BMS active. Although the BMS raises your odds of encountering a wild Pokemon with a Hidden Ability from 5% to 25%, RNG plays a big factor as well. Additionally, unfortunately, the chance to find a Hidden Ability Pokemon does not scale with the amount of Pokemon you catch, so it could indeed take a while for you to find what you are looking for. 

 

For more detailed information on the Black Medallion, you can refer to this link here: Black Medallion and Abilities Information. 

 

I know this may not be the answer you were hoping for, but I hope this information was helpful to you, nonetheless. If you have any additional questions or concerns regarding this, please feel free to reach out. Have a wonderful day!
 

- Codexed