Ash of Agni's Curse
The magician burns an offering to Agni, god of fire and the sacrifice, while beseeching the god to withdraw his favor from the fires of the magician's enemies. The magician then gathers the ash of the sacrifice and stores it in a box or jar. A handful of the ash, scattered on a fire, extinguishes any mundane blaze.
System: For each success rolled by the magician's player, the magician gains one dose of magic ash that she (but no one else) can use later. Each dose of ash extinguishes 100 square feet of flame.
