A magic scroll

A Magic Scroll is a scroll that you receive from the quest Plague City. You receive it as a reward at the end of the quest. When you read it, you learn the Ardougne Teleport (requires level 51 Magic), although reading the scroll itself does not have a magic level requirement. If you get more magic scrolls before using it and try to use both the first will enable the spell while the others will explode and deal 0 damage. To retrieve another scroll if you lose yours, head back to Edmund in which he has an infinite amount.