A dragon Scimitar is not rare at all. Every player starts out with the Dragon Scimitar. It is a very good weapon and gives you the following stats;
Attack Bonus
Stab: +8 Slash: +67 Crush: -2 Magic: +0 Range: +0
Defence Bonus
Stab: +0 Slash: +1 Crush: +0 Magic: +0 Range: +0