Primal Horizon Shifters Resource Pack Wiki & Guide

You can obtain one of the three starter lines (Citrillume, Infernito, or Potdary) by finding them in the wild across different biomes, or by using commands if your server/world has them enabled. Once you have your starter, you can begin training it and evolving it through leveling up.

Citrillume (Grass) evolves into the rideable flying mount Citrisaurid, Infernito (Fire) gains Ice typing and becomes Slacho for land riding, and Potdary (Water) gains Rock typing and becomes Mortaraid for water and land travel. Choose based on whether you want early flying, land, or water/land mobility.

Only specific Pokémon can be ridden: Citrisaurid, Slacho, Mortaraid, Ostrike, and Fimbulven. Once you have one of these, you'll need to interact with it (usually by sneaking and right-clicking) to mount it, then use standard movement controls to travel.

Mortaraid is the primary water mount and can travel across both land and open water. Fimbulven can fly over water but doesn't swim through it.