how do I get kaiser set for ib

[TypicalCasual]

I have been trying to figuring out how to get kaiser set rarity 12 but all Im seeing is that u have to fight teostra which i already did

[Kackstift]

google is your friends.. sometimes...
https://monsterhunterworld.wiki.fextralife.com/Teostra+Alpha+++Armor+Set

[K-Driver]

I think it's based on materials you get instead of fighting the monster.

In the older games you had to get the first material of the armor piece to unlock it at at the smithy. In this game armor sets unlock at the same time so I'm not sure which piece it depends on, maybe the helm or any of them?

[Hammer Of Evil]

it was hard for me to build as well, since i didnt have anjanath & fulgur anjanath mantle at the time.

have to farm a lot to get a few in stock.