Control Elder Scrolls
Elder Scrolls are artifacts of immense power that aid an alliance in the ongoing battle to control Tamriel by conferring bonuses to every member of that alliance. Each alliance has a special stronghold in Cyrodiil where their Elder Scrolls are kept and protected – but enemy alliances can break in and take them if they are not guarded properly. Once access is gained and a Scroll taken, it must be taken back across Cyrodiil and placed in the alliance’s stronghold. Only then are the bonuses of the Scroll bestowed upon all the members of that alliance.
Capture an Elder Scroll, protect it, and return it to your alliance’s stronghold to wield its power and gain bonuses.
You mean the scroll that turns you blind and insane when you read them?
From the Elder Scrolls Wiki:
The Elder Scrolls are artifacts of unknown origin and quantity, being simultaneously archives of historic, past and future events. The prophecies of the Elder Scrolls and the Heroes are interdependent; one cannot exist without the other. They are also known as the "Aedric Prophecies", suggesting that they may have been created by the Aedra. . Without technological aid, Elder Scrolls cannot be read without extreme side-effects, among which are blindness and insanity.