Guild "Specialization" Certificates, for members to use as a consumable:
-When you complete a guild related quests, the guild buffs double. (XP, Drop Rate, Speed while carying Packs, Honor on Jury,etc.)
When you reach a specific level, a guild specialization consumable is available for you to use. When you use it, the current guild buff you chose is doubled.
EX: Guild with 7% drop rate, when completed a quest, goes to 15%; With the consumable, you can chose to double the Drop rate, making it 30% for 1 hour; When the Specialization Consumable ends, the guild buffs reset to normal 7%.