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Buyable from Goblin Merchant

Whenever an enemy hero dies within 1400 AoE, gains 2 charges if it has 0 charges, else gains 1 charge (each death can only charge one of these items, if two or more heroes in the AoE have this item, only one will be charged)

Soul Release
Can expend one charge to target an allied or enemy hero
If an ally is targeted, it is healed for 400 HP over 8 seconds (this effect ends if the hero takes damage from a source other than Sentinel, Scourge or neutral creeps)
If an enemy is targeted, it loses 150 HP over 8 seconds
Has a 10 second cooldown, and 950 cast range

Damage Block
Gives a 70% chance to block 40 damage if the wielder is melee, or a 70% chance to block 20 damage if the wielder is ranged

Discord
Applies a debuff on all enemy units in a 500 AoE, causing them to have reduced magic resistance for a duration.
Amplifies magic damage by 25%
Lasts 15 seconds, costs 75 mana, has a 30 second cooldown, and an 875 cast range

Vampiric Aura
+16% Lifesteal
Only affects melee units
900 AoE

Damage Aura
+15% damage
Bonus damage is based off of base damage and damage from attribute points
900 AoE

Armor Aura
+5 armor
Does not stack with armor auras from Assault Cuirass, Ring of Basilius, or Vladmir's Offering
900 AoE

Mana Regeneration Aura
+0.8 mana regeneration
900 AoE