Pure Marigold Geas Outfit (F) is crafted with Tailoring in Mabinogi (clothes). This page lists everything needed to make it, checked against the game as it exists today. The interactive planner lives in the Tailoring Companion.
How to get the sewing pattern
The sewing pattern is rank 1 and survives 30 uses; every crafting attempt spends one use.
Seven Nightmares (10 Uses): Clear the Seven Nightmares mission against Cethlenn from the Tech Duinn quest board.. Party of 1 to 4 with a minimum total level of 3,000; the pattern drops as a limited 10-use item.
Materials
Expect about 7 attempts per finished item (15% average progress per attempt). Per-attempt materials are consumed on every attempt; finishing materials once per item.
Each attempt uses
5× Scented Silk — Gathered in the Forest of Four Seasons fairy area.
2× Fog Silk — synthesize from Fine Silk + Fine Fabric + Bottled Water (rank 7 Synthesis)
2× Geas Core — Drops from Feth Fiada, Revived Illusion, or Seven Nightmares Tech Duinn missions.
Finishing (once per item)
2× Finest Finishing Thread — Buy directly from any general goods NPC shop.
2× Finest Leather Strap — weaving rank 3-1 on a spinning wheel