Root Of Evil

Root OF Evil is a Divination quest given to the player in Year 14 once the quest "Knights Of Illusion" is complete. It rewards the player with 4000 Points and 800XP upon completion and is repeatable.
=== Quest Description ===
"The clay tablet has portended the emergence of a hidden group of Dark Wizards and Faceless Sorcerers beneath the willow. Use Immobulus to get past the willow and deal with them"
==== Quest Objectives ====
* Buy Immobulus from Summer's Spellbooks
* Use Immobulus to get past the Willow and reach the tunnels below
* Kill Dark Wizards (6)
* Kill Faceless Sorcerers below the graveyard
=== Walkthrough ===
==== Buy Immobulus from Summer's Spellbooks ====
Teleport to Wicket Alley and locate Summer's Spellbooks, the shop will be to the right of you upon entering and have its name on the front. Speak to the NPC Summer and purchase Immobulus from her. It will cost 1000 Points if you haven't already bought it, but if you have bought it prior to the quest, it will not have to be bought again, and this step will be automatically completed for you. 
==== Use Immobulus to get past the Willow and reach the tunnels below ====
Strike the Willow with Immobulus and get inside the cave under it before it starts moving again, and dont stay by the entrance to the underneath of the willow,, as it can hit you through the cave walls and you will be within its range. You are only safe from its instakill attacks once you go through the smaller cave path by the water. Shields will not save you from The Willow as it will still be able to instantly kill you upon hitting if you have a shield, so dont waste time bought by Immobulus casting one before you go in, although one will be needed once you get to the graveyard underneath. 
Although this part of the quest is no longer marked as needed upon repeating the quest, you still need to get under the willow somehow to do the other parts of the quest.
(The parts of the quest below this point are the ones needed for the repeatable version of "Root Of Evil" 
==== Killing the NPC Enemies ====
====== Dark Wizards (6) ======
Players killed with the role "Dark Wizard do not count towards this quest goal as they are not the same thing as the NPC mob.
As soon as you enter the graveyard, the dark wizards will spawn which you need to kill. However, as the game does not specify the dark wizards for this quest have to be from the graveyard, if youre struggling to defeat the wizards in the graveyard environment, you can always go to the overworld upon triggering this section of the quest and kill six dark wizards from somewhere like the Dark Wizard hideout entrance or Elemental Stones, or cast "Morsmorde" and kill those dark wizards, then return to the same spot under the Willow and run past the graveyard Dark Wizards without killing them, and go to the section at the front which opens up to reveal the passageway that leads to the Faceless Sorcerers.
====== Faceless Sorcerers (2) ======
Once you defeat the Dark Wizards, you can drop through the opened passageway and proceed forwards to the location of the Faceless Sorcerers, although it is worth noting that after immediately dropping down, nothing can attack you in that spot so its a good time to wait for your Health and Shield Health to regen, load a spell and wait out any spell cooldowns before proceeding. Once you walk forwards, a Faceless Sorcerer will spawn, try to defeat it quickly and without walking further forwards so you dont trigger further spawns. Once that one is completed, walk further forwards and defeat the other. Stunning spells are heavily advised to help defeat the Sorcerers, as well as defensive spells. 
[Information needed, do Faceless Sorcerers from dark wizards attacking the school and natural spawns count towards the objective?]