Dragon scimitar

The Dragon scimitar is the strongest scimitar available, and can only be wielded by members who have at least 60 Attack and who have completed the Monkey Madness quest. It can be bought for 100 000 coins at Daga's Scimitar Smithy on Ape Atoll. The dragon scimitar has a special attack, Sever, which makes the player's attack more accurate and makes the target unable to use protection Prayers for five seconds, using 55% special attack energy. This effect doesn't work on NPCs (such as the Kalphite Queen), however.

As with all Dragon weapons, players cannot make this item using the Smithing skill. The Dragon Scimitar is widely regarded as the second best one-handed weapon in the game, behind the Abyssal Whip. Strangely, both these weapons are criticized because many players feel they have a bad special attack. It is very popular since many players prefer this weapon to train the Strength skill since it is faster than the Dragon longsword but it's bonuses are slightly less.

Apparently they are made by monkeys, according to Zeke.