Clarity

The Clarity is an item purchasable at the Main Shop, under Consumables. Allowing lost mana to be regained quickly, heroes can use one to restore mana in a safe location before rejoining the fight. It is not effective in the midst of a fight, as any damage suffered immediately cancels the effect.

Additional information
It takes time to restore mana, so don't use it in the middle of combat. Clarity potions can also be used on allies, allowing you to quickly pick up a hero that's low on mana.

Stacks with itself in inventory.