Greek fire is a tactical item which can be used for offensive uses or for blocking certain passages, as enemies tend to avoid flame covered hexes. Upon using, the jar will set an area with an one-hex radius on fire, which will expand to a two-hex radius within two turns. If enemies are present, it will inflict 2-4 points of fire damage and inflict the burning Status effect and the burned effect when it lasts. The hardest ingredient for this tactical item to acquire is Naphtha.
This tactical item can be countered with Water jugs, despite greek fire being known as a fire which is hard to exthinguish that way, as it floats on water, usually making the fire worse, as it can spread.