The unique affix skeleton raise has no internal cooldown and a relatively low chance (and, obviously, is useless against bosses that don't summon minions), but these skeletons do not have timed life, are invulnerable, and deal roughly 100% damage as Physical. They move quite slowly, however, so a fast-moving character may leave them behind easily. The empowered sword lasts approximately 10 seconds, and adds extra damage to every attack, regardless of its Proc Coefficient. Exploding skeletons have very small radius (10 yards at most), but their blasts may overlap, potentially dealing full 5000% damage to a single foe.