
Other dragons tasked to destroy the world tree are Grabak, Grafvolluth, Goin and Moin.Ĭampaign appearances Fall of the Trident

Ratatosk ferries insults back and forth between Nidhogg at the ash's roots and the eagle living up in the branches. Yggdrasil is also home to an eagle and to an anthropomorphic squirrel named Ratatosk. He gnaws on the roots of the world ash, Yggdrasil, waiting for Ragnarok. In Niflheim, the Norse Underworld, lives a great dragon or serpent, Nidhogg, whose name means "tearer of corpses".

He is also vulnerable to large masses of powerful ranged myth units like the Vermilion Bird and Phoenix. If players find themselves losing a battle, they should command Nidhogg to retreat as soon as possible because his slow speed leaves him vulnerable to pursuits from his counters. The player should therefore protect Nidhogg with an army and avoid direct engagements with Zeus players. Zeus' Bolt can kill Nidhogg instantly except in the Extended Edition where it only deals damage equal to 2% of his health. Ranged heroes such as the Pharaoh (especially the Son of Osiris), Immortal, and Odysseus do serious damage to Nidhogg, and he can die fairly quickly if unsupported. Towers and fortresses gain a massive attack bonus against flying units, so keeping Nidhogg in an enemy town too long will wear him down. He cannot regenerate or be healed by any means, so sustained attacks will finish him. Ranged human units will eventually prevail over Nidhogg, but with dreadful losses, and ranged heroes, his main weakness, can be hard to come by. Despite being airborne, the Nidhogg will, however, take splash damage from a Titan while it attacks ground troops.

He can slaughter units and take down buildings with ease, and, being a flying unit, can even take on Titans with impunity.
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Nidhogg's devastating attack, huge number of hit points, and high armor almost make him a one-unit army.
