Ice King digs up an item buried underneath the Ice Kingdom.
- Brick Joke: The episode starts with Ice King having stolen all the wire coat hangers in the Candy Kingdom because he claims to have dropped his keys into a crack in his floor and he was using the hangers to reach them. The episode ends with him finding the keys inside his mouth.
- Call-Back: The four Bizarro Elements (Ice, Fire, Candy, Slime) introduced in "Evergreen" returns and its significance is expanded.
- Continuity Cameo: Urgence Evergreen makes a brief cameo appearance when Patience discusses the elementals.
- Genki Girl: Patience St. Pim is a peppy ice lady who is prone to exaggerated movements.
- History Repeats:
- Just like Evergreen, Patience came up with a plan that the other elementals refused to go along with. This time, though, the Fire Elemental (Flame Princess, in this case) wasn't in much of a position to object, as being doused with water made her too weak to talk much.
- Patience's idea to freeze herself and her contemporaries in order to outlast the comet that caused The Great Mushroom War also qualifies.
- Hoist by Her Own Petard: Patience unlocks Bubblegum and Slime Princess' elemental powers, which comes back to bite her when they use their newfound powers to free themselves, subdue her, and escape.
- Minor Crime Reveals Major Plot: Ice King's theft of coat hangers in order to retrieve his keys leads to him, Finn and Jake coming across Patience.
- Overshadowed by Awesome: Ice King is a powerful ice mage, but Patience's control over her ice powers puts his to shame. Not only can she make stronger ice, she can freeze and thaw with great precision.
- Reincarnation: Patience is the reincarnation of the ice elemental, Evergreen. The other three elementals (Chatsberry, Balthus, and Slimy D) were reincarnated into Princess Bubblegum, Flame Princess, and Slime Princess.
- Sealed Badass in a Can: To avoid the Great Mushroom War, Patience encased herself in a ball of ice and rode it out until she was discovered a thousand years later.
- Super-Empowering: Princess Bubblegum and Slime Princess' are revealed to have elemental powers, but they needed Patience to unlock them first. PB can barely use hers, but Slime Princess is a natural.
- This Looks Like a Job for Aquaman: Patience needs the Ice King to bring some princesses to her "even if they don't want to come."
- Worf Had the Flu: Being frozen left Flame Princess too weak to do anything but rest for the duration of her capture. It's not until she gets some fuel for her flames that she's useful again.
