Elma is obtained by completing the challenge battle "Otherworldly Fighter," and will be removed from your party when you leave the Land of Challenge. For Xenoblade Chronicles 2 on the Nintendo Switch, a GameFAQs message board topic titled "Pentagon Chip Farming - Easy Way".

Pentagon Chips are Core Chips in Xenoblade Chronicles 2 and Torna~ The Golden Country. Pentagon Chips share their appearance with Hexagon Chips, Rhombus Chips, and Tri-Chips. They may also be acquired from Challenge Battle Mode challenges. They can be dropped by a wide variety of enemies, primarily in Temperantia, as well as found in Treasure Troves and given as quest rewards.

For Xenoblade Chronicles 2 on the Nintendo Switch, a GameFAQs message board topic titled "Best Core Chips For Each Blade Role/Type". first, you need to be level 50-55, and its highly recommendable to have pentagon chips on Dromach since it has 1% chance to kill this monster with one shot, which basically happens all the time for me, this is how you get pantagon chip if you dont own one Guide:How to Pentagon chips by chapter 3 pentagon chips is about 3 times stronger than anything you can buy at this point, and 2 times stronger than anything you can buy on chapter 4 you need to be level 30 at least to farm them, maybe you can do it if you had a better setup than me, but i played with everything and i couldnt do it before level 30 HOW TO OBTAIN ELMA [].