What is Prosviet?

"Prosviet" (from Russian, literally "reveal") is a slang term used to describe the use of items that reveal invisible enemies. Most often, it refers to the use of Dust of Appearance, but depending on the situation, players may also mean Sentry Ward or Gem of True Sight.

The phrase “dai prosviet” means using detection items for reveal an enemy who has gone invisible — for example, Riki or BH. If the Dust of Appearance is used too late, the enemy can escape unpunished. Supports usually buy detection items, but in some matches, cores get them too — especially when playing against strong invisibility-based heroes.