Board Thread:Update Suggestions/@comment-27912573-20170607131616/@comment-25856498-20170609092416

Arena 4 - Last Stand: Have a tower survive 1 minute with less than 10% of its health remaining (50XP/5 Gems)

Arena 7 - Turnaround: Win a match having gone 0-2 down before 1:00 remaining (100XP/10 Gems)

Arena 10 - Psyched: Predict and destroy 10 Elixir worth of troops before their deploy time expires, in a single match (200XP/20 Gems)

Also I feel like making one for Challenges and one for Clan Battles:

Challenges - Hot Streak: Win 25 matches in a row across any type of challenges (1000XP/100 Gems)

Clan Battles - Rapid Takedown: Destroy the enemy King's Towers within 1 minute (500XP/50 Gems)