The Wooden Killer

Level: 9

NPC: Hawken the Forester in Zviglod Grove / Vaslav the Ranger in Light's Edge

Steps:

Bring Hawken the Forester / Vaslav the Ranger Fluorite 10pcs, Magical Agate Ink 10pcs and Downpetal 10pcs, so he can make a Hunter’s Instinct Amulet.
With the hunter's instinct amulet in your backpack go to Thorn Apple Brushwood / Freedom Steppe to kill an Orc Conquistador Skeleton.
You will be attacked immediately after the fight by an Ancient Arboris.
Return to Hawken the Forester / Vaslav the Ranger

Fight:

Ancient Arboris (6600hp) which summons 98 Arboris to the fight (Young Arboris, Arboris).

The Ancient Arboris sacrifices any of the summoned Arboris if they are below 45hp to heal itself and the remaining Arboris for 120hp.

As with every Merchant Mark boss, the Ancient Arboris is immune to being stunned. If however you land a hit that would have stunned, it will deal double damage instead.

Rewards:

Merchant Mark 100pcs, Great Elixir of Strengthened Gift 1pcs.