This is the trickiest treasure chest of the collection. If you are lucky enough you can get the most valuable prizes of the swamp.
It may contain one of the following:

7,380% Bronze Coin
4,000% Silver Coin
0,100% Emerald Coin
11,000% Small Potion Kit
11,000% Medium Potion Kit
9,000% Devotion box
9,000% Pet snack pack
9,000% Stamina Potion
6,000% World boss ticket
5,000% Swampdefenders ticket
6,000% Skill tree reset
5,000% Bless ticket
3,000% Wisdom Page Support
3,000% Wisdom Page Attack
0,1250% SwampSoldiers Amulet
0,1250% SwampSoldiers Ring
0,1500% Mushos Egg (Common)
0,1500% Beeink Egg (Common)
0,1500% Snika Egg (Common)
0,0750% Remo Egg (Rare)
0,0750% Fliie Egg (Rare)
0,0750% Litocross Egg (Rare)
0,0500% Goatic Egg (Epic)
0,0500% Bullsbull Egg (Epic)
0,0500% Nimbus Egg (Epic)
0,0200% Rockie Egg (Legendary)
0,0200% Kowski Egg (Legendary)
0,0200% Sphinx Egg (Legendary))
0,2500% Light Thrower (Common)
0,2500% Dard Launcher (Common)
0,2500% Apprentice Archers ( Common)
0,1250% Earthquaker (Rare)
0,1250% Energy Centry (Rare)
0,0750%Trainer ( Epic)
0,0750% Darkness Pulpit ( Epic)
0,0750% Bone Launcher ( Epic)
0,0300% Time Controller (Legendary)
0,0300% Flame Thrower ( Legendary)
0,0900% House
0,0100% Island