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Strength Drain Aura
Strength Drain Aura

The Strength Drain Aura reduces the damage inflicted both to towers and players by monsters within its range to a listed percentage. It costs 60 mana and 5 DU to place. As of patch 7.30 (PC), it also disables the elemental affinities of any enemies inside.

This aura is generally not required on Easy/Normal/Hard difficulties where tower health is sufficiently high; on earlier levels there are usually far better uses of 5 Defense Units. On Insane or Nightmare difficulty, however, this aura can be very helpful in protecting heroes and physical defenses from the stronger monsters, including bosses.

Strength Drain Auras are often combined with Ensnare and Electric Auras to form the widely-used three-aura stack. Because they has less than half the lifespan of the other two auras, frequent repairs may be needed to keep Strength Drain Auras alive.

Upgrade Table

Level Health Effective Range Enemy Strength Mana To Upgrade Mana Invested
Base 140 3.77 67% N/A 60
TowerUpgraded 1 168 4.55 55% 100 160
TowerUpgraded 2 189 5.07 49% 200 360
TowerUpgraded 3 215 5.70 44% 400 760
TowerUpgraded 4 238 6.22 40% 700 1460
TowerUpgraded 5 260 6.70 37% 1220 2680
  • Upgrading a hero defense increases its damage by 10% each level, and its health, lifespan or detonation count by 20% (a level 5 defense will deal 50% more damage and have 100% more health than a defense with no upgrades).
  • On the other hand, upgrading a hero defense will mean that it acts as if the Hero has a higher Defense Area of Effect and Defense Attack Rate. A level 1 turret gets a bonus of +2 to all stats, while a level 5 turret gets +36.
  • While the hero who summoned the tower is active, its damage is increased by 33% (PC).
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