Murder Mask is a Dota 2 item of Uncommon rarity. Current price — $0.60. On DotaLoot it drops from 3 cases — open them and get Murder Mask cheaper than on the market.
You can get Murder Mask for free in daily DotaLoot giveaways or with Battle Pass levels. The fastest way is opening cases — noticeably cheaper than buying it on the market.
The current price of Murder Mask is $0.60. It is updated based on the Steam market.