OGC:Flareshot (3.5e Equipment)
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This is a flashstone that has been carefully shaped and attached to an arrow or crossbow bolt, allowing it to be used from a greater distance. Due to its weight and shape, a flareshot bolt has a –1 penalty to attack rolls, a -2 penalty to damage rolls, and a -10 to the normal range increment of the weapon. When it strikes a hard surface, it detonates, with effects identical to those of a normal flashstone.
If a flareshot bolt strikes an unarmored creature, it will not detonate. If it strikes a creature wearing light armor or with a natural armor bonus of up to +3, there is a 35% chance it will detonate. If the creature is wearing medium armor or has a natural armor bonus or +4 or +5, there is a 60% chance it will detonate. If it strikes a target wearing heavy armor or with a natural armor bonus of +6 or greater, or if it hits a hard inanimate object, it will always detonate.