There are four components needed to build an epic magic item: items, seals, shards, and scrolls. The scrolls are obtained by killing epic-mod monsters, and have prehaps a 1% drop rate. Unlike other things which randomly drop from, these scrolls are rivalrous and can only be picked up by the first party member who reaches it. For multiple reasons, the process of obtaining epic scrolls is not really fun, so here is a suggestion to improve it.
Suggestion
When a level 20 character clicks on the gateway to enter the Sands of Menechetarun zone, a dialog menu appears allowing him to choose either the normal zone or an Epic version, where all monsters have been replaced with dangerous epic variants. Obviously, these creatures would have the same chance of dropping an epic scroll as any other epic monster.
In addition, any rare named monster in the Epic Sands of Menechetarun has 10 times the normal chance to drop an epic scroll.