Skyrim:Dragonbane

Leveled Item: Dragonbane (000f71d0) (All statistics are for level 46+ version)
Type	One-handed Sword
Editor ID	MQ203AkaviriKatana5
Statistics
Damage	14
Speed	1	Reach	1
Weight	14	Value	2596
Tempering	Quicksilver Ingot	Perk	Steel Smithing
Enchantment
40 points of extra damage to dragons, 10 points of shock damage to others: Dragon Damage, 40 pts Shock Damage (Extra), 10 pts
Charge/Cost = Uses		3000/84=35

Dragonbane

Dragonbane is an Akaviri katana found in Sky Haven Temple. It is indistinguishable from the average katana. As the name would suggest, Dragonbane does additional damage to dragons if used against them. Used against other opponents, the blade will do shock damage instead. Tempering Dragonbane requires one quicksilver ingot and the Arcane Blacksmith perk, and the Steel Smithing perk makes tempering twice as effective. It cannot be broken down for its enchantments.

Leveled Statistics

Level				Charge/Cost = Uses	Enchantment	Object ID	Editor ID
1-18	10	789	10	2000/47=42	20 points of extra damage to dragons, 10 points of shock damage to others: Dragon Damage, 20 pts Shock Damage (Extra), 10 pts	000f1ac1	MQ203AkaviriKatana1
19-26	11	1046	11	2500/56=44	25 points of extra damage to dragons, 10 points of shock damage to others: Dragon Damage, 25 pts Shock Damage (Extra), 10 pts	000f71cd	MQ203AkaviriKatana2
27-35	12	1189	12	2500/47=53	30 [sic]† points of extra damage to dragons, 10 points of shock damage to others: Dragon Damage, 20 pts Shock Damage (Extra), 10 pts	000f71ce	MQ203AkaviriKatana3
36-45	13	1860	13	3000/74=40	35 points of extra damage to dragons, 10 points of shock damage to others: Dragon Damage, 35 pts Shock Damage (Extra), 10 pts	000f71cf	MQ203AkaviriKatana4
46+	14	2596	14	3000/84=35	40 points of extra damage to dragons, 10 points of shock damage to others: Dragon Damage, 40 pts Shock Damage (Extra), 10 pts	000f71d0	MQ203AkaviriKatana5

^† The actual enchantment on the level 27-35 version of Dragonbane is the same as on the level 1-18 version of the sword, even though the description says otherwise.

• This bug is fixed by version 1.1 of the Unofficial Skyrim Patch.