You will need Keys to start and advance in the Missing Dragon Rescue. Your balance of Keys does not expire, so you can use them when you want. The number of Keys needed to start and advance in a Rescue depends on the rarity of the dragon. Gems can be used as a replacement if you're missing some Keys. Find Keys in Chests throughout the Event Islands and the Shop.
How do I get Keys for the Missing Dragon Rescue?
Last Updated: 35d