Board Thread:Dark Souls II/@comment-2.223.169.191-20140325204725/@comment-16047389-20141119183702

If the first attempt at relighting the First Flame by the Witch of Izalith created the Bed of Chaos, it's not hard to believe that a second attempt might create a second one. The fact that it is significantly smaller than the first one is important to note as well. Magus Eygil may have been a powerful Pyromancer, but she was by no means a Lord (even if she was in possession of the Old Witch Soul), nor did she have a group of Daughters to help her with it (or maybe she did, perhaps that is who the two Black Phantom Pyromancers are). A lesser effort would mean a lesser result. Rather than creating a Bed of Chaos, she created a Bug of Chaos. Rather than spawning an entire horde of Demons, she created the Smelter Demon alone. Also, here's an interesting side note. Have you ever noticed the similarities between the Smelter Demon and the Demon Firesage (the first Demon ever created)? Both use basic horizontal swing attacks and a slow wind up overhead swing to encompass most of their attack patterns, both are Demons covered in flames, and both possess an explosion attack.

As for the second point, it's arguable that either A) a part of Eygil is still in control, regrets what her Pyromancy caused, and swore never to use it again. Or B) the shackles were placed on her specifically to prevent her from using Pyromancy. It may restrict the proper movements necessary to use the more advanced Pyromancies (unlike the player who only wears the shackles on one hand, the Lost Sinner has both her hands bound together). The two pyromancers that join her may have been her disciples, but that's too heavy supposition to make. Intrestingly though, both the Pyromancers are female, and wearing the Tattered Set. I personally believe it's just more hinting at the connection between the Lost Sinner and the Witch of Izalith (along with the Witch, two of her daughters were engulfed in the Flames of Chaos as well).