Accumulates experience as you complete Dungeons, Battle Arena and Bomber Royale matches. When fully charged it produces 2 Troves of Wonders. This effect can only trigger once a week.
Writings of Wonder is a Legendary Tome that produces 2 Troves of Wonders when they are fully charged. Unlike Common Tomes(that can be used as often as you like without cool downs), these tomes can only be used once a week, although, they provide more rewards than Common Tomes per individual use.