Another idea could be Jake's transformation into a liquid - like state. He would be able to seep through small spaces, split into multiple parts, and reform. This would be really useful in situations where they need to get into a locked place or escape from a tight situation. It would also bring a new dynamic to his relationship with Finn as they would have to figure out new ways to work together.
One interesting idea could be the transformation of Finn into different magical creatures. For example, he could turn into a fire elemental, which would give him the ability to control and generate fire. This would completely change his fighting style and how he interacts with the Land of Ooo.
The best chapter pointer here is Chapter 76, "Who knows if there is poison inside". It opens with Thinking of this, the aunt repeatedly praised, "Girl, hearing your words... and closes on Soon, Shu Yan also couldn't hold out any longer, leaning against the tree....
A practical answer is Chapter 152, because it turns the idea into a concrete scene. The chapter opens with While most of the villagers of Chixia Village were gathered at the village..., adds pressure through Is every man in the world supposed to be hers?], and ends on That shouldn't be." Zhao.
If you want the clearest chapter reference, go to Chapter 143. Early on, Is there really such delicious fish soup in the world?; later, the chapter leans on Sister Li, you are too awesome!" The fish soup was not only fresh and....
A practical answer is Chapter 95, because it turns the idea into a concrete scene. The chapter opens with Hearing others praise her daughter, Aunt Lin was smiling so wide she..., adds pressure through And once everything is settled, escaping might become very difficult for..., and ends on Your.
A practical answer is Chapter 128, because it turns the idea into a concrete scene. The chapter opens with Still hungover, Huo Ziyang had just awakened from a blurry dream when his..., adds pressure through Just looking, she's a diligent and well-mannered good girl, nothing like..., and ends on.
Look to Chapter 134 for the clearest answer. It begins with After a brief noon rest, the production team was up to their antics again., keeps building through Just as several guests had finished their relaxing hot showers and were..., and lands on [Are you kidding me, is Jiang Li putting on an act.
Look to Chapter 101 for the clearest answer. It begins with Jiang Li walked over to the slope where the two had fallen down., keeps building through Below the small hill was nothing other than a large patch of sludge., and lands on If you encounter any trouble in the future, you can come to me..
Chapter 110 is the strongest chapter-level answer because it starts from Jiang Li, carrying a wooden basin, walked over to the well. and follows through on My parents died, and fortunately, Daddy found and took me in..
Chapter 93 is the strongest chapter-level answer because it starts from Jiang Li looked back and saw several aunties linking arms, walking up the... and follows through on I did the same when I was young, and when my dad found me, I got a beating....