To do the Pokemon Black 2 1 million EXP in a day achievement, I have quite a bunch of Haunter to give away. A little more than a box worth of them.

Being Haunter, they will evolve to Gengar once traded if you let them.

This is my friend code: 3613 7899 0721

Let me know, so we can arrange a trade!

https://kaeru.world/projects/wfc

Since the Nintendo DS online server and ceased operations many years ago, you can use private servers like Wiimmfi to be able to connect to a recreation of the online services.

How to connect to Kaeru WFC, a proxy to Wiimmfi:

Open Wi-Fi settings of your DS, DSi, 3DS or N3DS. Follow the instructions manual for how to do so for each console.

Change the configuration of your Wi-Fi network, or connect it right now.

In the configuration (or after connection, go into configuration now), deselect Auto-obtain DNS and write this address in Primary DNS:

178.62.43.212

And either one of these address in Secondary DNS:

1.1.1.1 (Cloudfare DNS) 8.8.8.8 (Google DNS)

(If you can suggest a more privacy respecting DNS address to use here, please do so!)

You can now connect to Nintendo Wi-Fi connection! Wiimmfi for Pokemon is working as a proxy to Poké Classic Network. Check out the website for information about your or other available GTS trades!