Thicket Substrate

 is a potion.

Obtaining

 * Crafted by an Alchemist (Lv. 80) from
 * 1 Kaliptus Plank
 * 1 Oliviolet Plank
 * 1 Dark Bamboo Plank
 * 1 Hornbeam Plank
 * 1 Cherry Plank
 * 1 Potion of Old Age
 * 1 Memory Potion

Uses

 * Used in the craft of
 * All medium Trophies