When given Eradia, Yggdrasil enables Lightning to extend the lifespan of the world of Nova Chrysalia to the maximum thirteen day limit, and delay the Apocalypse. Each of the Yggdrasil's fruit-like structures represents a day. Despite the limit being thirteen days, Lightning can extend the lifespan of Nova Chrysalia to the fourteenth day, if she manages to give enough Eradia to Yggdrasil to bloom six times which equals to six additional days in order for Lightning to reach Day 13. However, Yggdrasil can bloom seven times, five orbs will bloom on the tree's stem, then the tree's flower blooms partially, and finally the tree's flower blooms completely into an orb.