Cyrus’ Sabre belonged to Cyrus, the hero of The Elder Scrolls Adventures: Redguard. The Dead Man’s Dread Creation brings his sword to Skyrim, together with his boots and clothes.
How to get it
During The Restless, explore Blackbone Isle Grotto. The sabre lies there with Cyrus’ Boots and Clothes. According to UESP, you can also craft more copies after the quest.
Enchantment
None. The sabre is unenchanted, so you are free to put your own enchantment on it at an arcane enchanter.
Stats and handling
14 base damage at a weight of just 6. That is Daedric-sword damage at less than half the weight. It uses the One-handed skill.
Smithing
Improve it with a 
Steel Ingot; Steel Smithing doubles the improvement.
Strengths and weaknesses
- Strength: excellent damage-to-weight ratio.
- Strength: a blank slate for your own Enchanting.
- Weakness: no enchantment out of the box.
Tips
- Enchant it with two effects once you have the Extra Effect perk for one of the best custom swords in the game.
- Light enough for stealth characters who care about carry weight.
Added by the Dead Man’s Dread Creation, part of the Skyrim Anniversary Edition. Details checked against UESP and summarised in our own words.
