Final answer:
Brimstone's Sky Smoke(E) costs 100 credits per charge in the game Valorant, and players can buy up to three charges per round.
Step-by-step explanation:
The cost of Brimstone's Sky Smoke ability in the video game Valorant is 100 credits per charge. Brimstone's Sky Smoke (E) is a signature tactical ability that allows him to deploy smoke screens to obscure sightlines on the battlefield, giving his team a strategic advantage. Players can purchase up to three charges of this ability at the start of each round, each costing 100 credits. Therefore, tailoring the use of Sky Smoke to the team's strategy is essential for resource management.