- Continuum Blade
- Binds when picked up
- Unique
- Sword
- Main Hand
- Speed 1.80
- 35 - 114 Damage
- (41.4 damage per second)
- +30 Stamina
+11 Intellect - Durability 90 / 90
- Requires Level 70
- Requires Keepers of Time - Revered
- Equip: Increases damage and healing done by magical spells and effects by up to 121.
Equip: Improves spell hit rating by 8.
Continuum Blade is a very good caster sword with high spell damage, while easily obtainable with only a few Caverns of Time reputation runs needed.
Besides, it is also one of the two best preraid tanking swords for paladin tanks because of its high spell damage and fast attack speed. (The other is 
[Crystalforged Sword], which has similar stats and is a rare drop in Blade Edge Mountain.)
Source
You can buy this sword from the Keepers of Time quartermaster when you are revered.