Realm Loyalty
Dropping XP Items
XP Items will drop with a 100% chance from their relevant mob. Looting an XP item will start a 3 minute cooldown timer, wherein the player will not loot any other XP items.
For each unique mob type killed during this cooldown, the cooldown will be reduced by 20s. This means that rotating between three different XP Item npcs near each other will effectively give you a 2 minute cooldown timer.
This timer is further reduced by Realm Loyalty, up to a maximum benefit of a 30s cooldown reduction at 30 loyal days. This means that a fully realm loyal player has an effective XP Item timer of 2m30s.
These bonuses will combine, meaning a fully realm loyal player rotating between three unique XP item monsters would have an effective timer of 1m30s.
Group XP Item Considerations
When in a group, XP items will still obey the parameters defined above. However, as XP items drop the system will rotate through group members and use their XP timer cooldowns if available. This means that X items will drop every 3minutes, where X is the number of players in your group. This timer can also be reduced by loyalty and killing unique monster types.
XP Items Map
A map of all the XP items location is available here: OpenDAoC XP Items Map