The Runes of Fealty are tokens of loyalty that allow you to raise your League’s maximum membership limit to as maximum of 150 Members. Upon reaching level 50, all League Members will automatically begin receiving League Runes of Fealty for every fifth additional Level attained.
To use this feature, go to the Embassy and open the “My League”/”Expansion” tab. From here you can view how many Runes of Fealty you and your League members currently have available, or apply your Runes of Fealty towards raising your membership limit. Each additional League Membership slot requires 20 Runes of Fealty to unlock. All level 50+ Members may contribute towards their Leagues expansion.