Arcane Orb – DOTA Hero

Gives the Destroyer extra power to damage his enemies based on his remaining mana pool. Damage type is pure.

Level 1 - Deals 6% of your current remaining mana. Deals 100 bonus damage to illusions and summoned units.
Level 2 - Deals 7% of your current remaining mana. Deals 200 bonus damage to illusions and summoned units.
Level 3 - Deals 8% of your current remaining mana. Deals 300 bonus damage to illusions and summoned units.
Level 4 - Deals 9% of your current remaining mana. Deals 400 bonus damage to illusions and summoned units.

Cooldown: 6/4/2/0 seconds.
Level 1: 100 mana, 6 sec cooldown.
Level 2: 100 mana, 4 sec cooldown.
Level 3: 100 mana, 2 sec cooldown.
Level 4: 100 mana, 0 sec cooldown.