Hello, 4qJS
When you have the Zygarde Cube in your hotbar there's a chance that Zygarde Cells and Zygarde Cores will spawn around you, on leaves and grass (Mostly leaves). You can collect these by right clicking them with the Zygarde Cube.
When the cube has 10 Zygarde Cells and one Zygarde Cores then it will be able to assemble Zygarde in its 10% form. If the cube has 50 cells and 1 core then it will be able to assemble Zygarde in its 50% form. If the cube has 100 cells and two cores it will be able to assemble Zygarde in its 50% form but with the ability Power Construct, which allows Zygarde to become its 100% form in battle if its HP is below half at the end of a turn.
Zygarde can be assembled at an assembly table, which on most of the server can be bought at /warp grassmart.
-Rasfisch
Sources:
The Zygarde Cube is a special item introduced in Pixelmon Mod. This cube can be used to collect Zygarde cells/cores.
pixelmonmod.com
The Zygarde Cells/Cores are a special item introduced in Pixelmon Mod, in order to obtain these the player first must have the Zygarde Cube in their inventory in order to have them start spawning around them.
pixelmonmod.com