Shyllien Assimilation Essence 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
Shyllien Assimilation Essence is a rank F Magic Craft recipe with a best success rate of 98% at rank 1 and dan ranks.
Materials
Each craft uses
5× Shyllien Crystal — Shyllien Ecology. District 2 Huge deposit is 95% crystals at 100% gather success; Seal Merchant Mondays 50 for 5 seals
1× Garbage Herb — 60% of Central Complex patch pulls. You will drown in these