Geas Devastation Chestplate (F) is crafted with Magic Craft in Mabinogi. This page lists everything needed to make it, checked against the game as it exists today. The interactive planner lives in the Magic Craft Companion.
Recipe availability
Geas Devastation Chestplate (F) is a rank 9 Magic Craft recipe with a best success rate of 96% at rank 1 and dan ranks.
Materials
Each craft uses
20× Eroded Mineral Chunk — Clear Feth Fiada, Revived Illusion, or Seven Nightmares on Normal or Hard.
16× Geas Devastation Crystal — Drops from Feth Fiada, Revived Illusion, or Seven Nightmares Tech Duinn missions.
35× Geas Core — Drops from Feth Fiada, Revived Illusion, or Seven Nightmares Tech Duinn missions.
10× Finest Fabric — weaving on a loom, higher rank