Sundew 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
Sundew is a rank B Magic Craft recipe with a best success rate of 98% at rank 1 and dan ranks.
Materials
Each craft uses
1× Shyllien
1× Mutant Plant Mucilage — drops from Mutant Carnivorous/Maneating Plants in the reserve