Due to the first enchantment being soultrap the enchantment can be set to one second soul trap (with 10 pts of fire damage per hit) to have over 1000 uses which can be a reliable soultrap + fire damage weapon.
Can you capture 2 souls if you enchant this and normal soul trap? Edit
I am wondering if you can capture 2 souls at once if you enchant a weapon with fiery soul trap and normal soul trap if you have the extra effect enchanting perk that allows you to enchant 2 effects on an item. I may test it later and report back. Ign0tus (talk) 10:02, July 12, 2012 (UTC)
Destruction school, not conjuration (unless I'm missing something) Edit
If I wear enchanted gear reducing destruction casting cost to zero (but not conjuration), a weapon enchanted with this loses no charges. It does lose charges when using gear that makes conjuration cost zero (but not destruction). Furthermore, as noted in the main article, it benefits from destruction school perks for augmented flames.
I also have seen no evidence that the trivia section is correct about enhancing damage to dual enchants. It works the same as any other destruction enchants that benefit from the augment skills. For example, say you have augmented flames 2/2 and augmented shock 2/2 but augmented frost is 0/2 (tested with ahzidals armor and sallow regent black book sorcery bonus using no potions). Fiery soul trap by itself yields 15 fire dmg (10 base + 50% from augment flames = 15). Frost enchant by itself = 36 (no perk bonus). Fiery soul trap + frost dmg = 15 fire dmg and 54 frost dmg (augmented flames bonus is applied once but to BOTH enchantments). Fiery soul + fire dmg = 15 + 54 (augmented flames bonus is applied once but to BOTH enchantments - it does not stack with itself). Fiery soul + shock = 22 + 81 (augmented flames bonus is applied once to BOTH enchantments + augmented shock applied once to both enchantments. Note that it applies the second perk bonus to the total strength after the first perk bonus is applied.) Kalanos (talk) 08:56, July 3, 2014 (UTC)