After losing an Exotic Mission, you will have two options:

1. Buy another attempt to find the reward without losing your current Mission progress. You can buy as many attempts as you wish. The price in Gems will vary depending on the remaining objects and the value of the reward.
   
   or
   
   
2. Go back to your Team selection where you can select a more powerful team of Exotic Animals and try again.
   
   
   Tip: Train your animals to become more powerful using Elixirs or try getting better animals from Exotic Chests at the Merchant.