Items / Soul Ring
Soul Ring costs 805 gold in Dota 2 patch 7.41f.
Consume %abilityhealthcost% health to temporarily gain 170 mana. Lasts 10 seconds. If the mana gained cannot fit in your mana pool, it creates a buffer of mana that will be used before your mana pool.
If this mana is not used before the duration ends, the extra mana is lost.
A ring that feeds on the souls of those who wear it.