crystal bows

To attain the Crystal Bow, you must have finished the Roving  Elves quest, which is a quest for members. Once you have done the quest, the next thing you need to equip the bow is a level 70 range and 50 agility

The Crystal Bow is like no other bow in RuneScape; it is a very powerful range weapon. One thing that is unique about the Crystal Bow is that it uses no arrows. So how does it do damage? Well, it has 2500 shots. Once the 2500 shots are used, the bow will revert to seed, and you must to recharge in Tirannwn. The bow also has ten phases it goes through. As you go through more stages, your bow will get weaker and weaker. To check what phase your bow is in just put your mouse pointer over it and it will tell you.

To recharge your bow you will have to go to Ilfeen in Isafdar. Speak to the elf and pay a certain amount of money for it to be recharged. The seed can be recharged as either a bow or shield. At first, the price is outrageously high, but the price will go down the more you recharge it.