Summary
Cloud Land 4 is the 25th Challenge Level, found at the Clouds bracket and as so feature the Mystic Cloud Key. This level is tricky and involves almost always merging 5 objects and quick movement as the Grass Tufts can change into unwanted Necromancer Grass which would make the challenge unwinningable.
Walkthrough
N/A.
Challenge Walkthrough
Merge Dragons! Challenge 25 - Cloud Land 4