The latest event in Tales of Crestoria is A Green and Swarmy Night, featuring Leia from Tales of Xillia and Raven from Tales of Vesperia. This event is a chance to get SSR and SR memoria stones of Leia and Raven respectively. (Like other events, these memoria stones do not become characters when you receive them.) The event will run from Friday, October 2, 2020 at 3:00am Eastern time to Friday, October 16, 2020 at 2:59am. The exchange for the event will remain open until Thursday, October 22, at 2:59am though. The story premise for this event is:
Leia is a young girl who works hard to bring customers to her inn. Lately, she has been struggling with a new inn built in the same town. In addition to not paying for lodging or drink, Raven and Vicious show no signs of seriousness in their work, putting Leia in a tough spot. In order to regain the customers lost to this new inn, Leia sets about planning a new strategy...
To receive all of the event rewards, players must clear the quests and complete multiple Polwigle World Funbassador Raids. The quests drop Slime Balls and Polwigle Plushies as rewards, although only the special Terra Polwigles will drop a Polwigle Plushie.
Slime Balls can be collected and exchanged for prizes at the event exchange. These prizes include Leia and Raven's memoria stones, gleamstones, adornment stones, and a variety of ascension materials. Polwigle Plushies, on the other hand, are used to open an instance of the raid. The Polwigle World Funbassador raid drops more Slime Balls with a very rare chance of also dropping a Raven SR memoria stone or even a Leia SSR memoria stone. Clearing both quests and raids also awards you Event Points, which will accumulate to earn even more prizes.
Certain characters from recent summons also have Attack bonuses during this event. Estelle [Halloween Witch] and Asbel [Count Asbela] each have a 50% ATK increase during this event's quests and raids. Kohaku [Sparkling in Battle], the featured character in the most recent Select Summon, has a 30% ATK boost. Their associated memoria stones also have the same stat bonus. The Leia and Raven memoria stones that are obtained during this event have a 20% and 10% ATK bonus respectively.
When fully awakened, the Leia memoria stone provides a +21% DEF boost to all dark allies in the party. The Raven one increases CRIT damage by +85% to all wind allies in the party.