Oil Jar

Overview
Can be used to prepare an area to be lit on fire with a for an extended time period.
 * Unknown burn time/damage vs Flame Arrow for players and structures.
 * Burns wooden structures decently well when combined with flame arrows.
 * Damages wood structures when combined with 1 flame arrow at roughly 1000 health per jar. Seems if it only burns on exactly one piece of wood (e.g. door) it deals up to 2000 damage.