They pushed themselves to Outlast the Enemy, to withstand all aggression without retreat. They believed that if the enemy could not match their endurance, then a battle could be won without having even commenced.
—In-Game Description
Not to be confused with the Script error: The function "Pol" does not exist. Unairu Polarity.
The Unairu way trains to become an indomitable soldier. The Tenno of Unairu provide the frontlines with unmatched tenacity, along with direct buffs to allies' offenses and defenses. Those who mastered the Unairu school are granted enhanced damage resistance and damage reflection.
Both Operator and Warframe are granted an additional amount of armor which mitigates and mirrors all damage taken.
They are able to impair enemies' offensive and defensive capabilities, and obfuscate them by providing invisibility to allied Tenno.
They are able to directly buff fellow Operators, increasing overall damage output from their Void Powers as well as their Amps.
Maxing this node can be significantly detrimental if there are many allies within range, as higher ranks drain much more energy/sec. Consider this choice carefully as ranking down is not possible.
Enemies hit by Void Blast are affected by Magnetize for 10s.
Unknown to unlock
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Despite the name and description, Magnetic Blast inflicts enemies with bullet attractors, not Script error: The function "Proc" does not exist. status.
100% chance to summon an Unairu Wisp per enemy hit by Caustic Strike. The Wisp will seek out the nearest ally within Affinity Range, increasing Operator damage by 100% for 20s.
Unknown to unlock
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The Unairu Wisp shares the same model as Cetus Wisp and is most often found laying on the ground.
Multiple wisps can be picked up by a single Operator, refreshing their duration.
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Basilisk Gaze will increase the range of Void Blast from 4 meters to 5 / 5 / 6 / 6 / 6 meters radius.
Notes
The Unairu school tree requires 8,107,516 focus points to fully maximize.
A fully levelled Unairu Operator is capable of:
Warframe Passive: Returns 100% of damage taken back to the attacker and increases Warframe and Operator armor by 60.
Operator Passive: Increases the Operator's armor by 500% and Void Blast radius by 60%.
Void Blast: Enemies hit receive bullet attractor for 10 seconds, and has a 100% chance to summon a Wisp pickup that increases Operator damage by 100% for 12 seconds.
Void Dash: Reduces enemy armor by 75% and damage by 50%.
Void Mode: Renders allies within 25 meters invisible and reduces their damage taken by 80%, but consumes 13 energy per second while in Void Mode.