Special Event in Japan: Monster Errands

There's an event running in Japan from May 8th - 20th that allows you to send off a monster on an errand. The time it takes seems to vary by rarity and level. You can use potions to speed it up as well.

New Units in Japan: Masquerade

New Monster Unit

Jiang Shi is a random reward from the new Errand event. You can send a monster out on an 'errand' and after a certain amount of time (based on rarity, level, etc) it will return with a random prize.