Breaching Flask

A flask made for breaching locked doors. When tossed against a door, window or similar medium sized entryway it blasts them open and anyone within 5ft behind the door is knocked prone. Works against doors with a roguecraft DC equal or less than 20. Creates a loud noise regardless of success. When attempting to use it against living creatures, they may choose to avoid it for 0 RP. Else, they are knocked back 30ft.