Pixelmon, powered by: https://reforged.gg/
The easiest and fastest way to install original latest Pixelmon Reforged for MC version 1.12.2! This Pack also provides a server to offer you the best multiplayer experience
Type in the modpack name (EZ Pixelmon) or paste the following url into the search box.
Finally, click Install at the bottom right of the launcher after you select EZ Pixelmon from the list on the left. The launcher will handle everything else!