Walkthrough

Talk to the Instance Manager to generate and enter the instance. You have 2 hours and 30 minutes to complete this instance.
Talk to Murdered Yggdrasilid. /navi 1@nyd 213/277
Kill the 12 monsters with the name Nidhoggur's Guardian.
Go to the second floor through the warp in the north. /navi 1@nyd 195/320
Solve the maze.

Map of the maze.
When the leader passes the end point, the party will be warped to the boss room. Nidhoggur's Shadow spawn.
Every 3 minutes the whole party will be warped into one of he corners. They'll get one status alignment (not reduced by resists) and they have to defeat 3 Ryncho and 2 Phylla to proceed.
- Northeast: HP -25%, SP -50%, Poison
- Southeast: SP -50%, Sleep, Chaos
- Southwest: HP -75%, Bleeding
- Northwest: HP -50%, Frozen
Kill the MVP.

Enemies

Name	Level	HP	Size / Race / Element
Dark Pinguicula	113	17,002	Small / Plant / Poison 2
Rhyncho	113	337,220	Medium / Formless / Water 3
Aqua Elemental	121	33,209	Large / Formless / Water 4
Phylla	139	345,560	Medium / Formless / Water 3
Ancient Tree	144	388,933	Large / Plant / Earth 3
Nidhoggur's Shadow	117	3,452,000	Large / Dragon / Shadow 4

Card	Type	Description
Dark Pinguicula Card	Headgear	ATK +10 Adds a chance of gaining a Poison Herb Nerium , Poison Herb Rantana , Poison Herb Makulata , Poison Herb Seratum or Poison Herb Scopolia each time a monster is killed.
Rhyncho Card	Headgear	Heal Skill Recovery + 3%. Increases SP cost of skills by 5%.
Aqua Elemental Card	Shield	Reduces damage taken from Water property enemies by 20% Increases physical damage on Water property targets by 5%.
Phylla Card	Headgear	AGI +1 DEX +1 Adds a chance of gaining Crit+ 20 for 4 seconds when performing a physical attack;
Ancient Tree Card	Weapon	Increases magical damage on Undead race targets by 10%.
Nidhoggur Shadow Card	Armor	INT +5 When equipped by a High Wizard or Warlock Jobs, Fixed cast of all skills -50%.

Image	Name	Description	Obtained From
	Nidhoggur's Shadow Garb [1]	Mdef +3 Increases resistance against all elements by 7% Increase MaxSP based on Refine Level and wearer's base level Has 1% of chance to recover 1% amount of inflicted damage to SP	Nidhoggr's Shadow