The Enchiridion (book)

The Enchiridion (which translates to "The Handbook" or "The Manual") was an ancient book with codes of conduct, guidelines, and other helpful information for heroes. The book had great power which allowed it to tear open worm holes between dimensions in the multiverse. It was destroyed by Finn in "The Lich" in order to stop the Lich from gaining access to the multiverse (although, the Lich still made it. See "The Lich" for more details.)

Background
The book was discovered in Greece by archeologist Simon Petrikov (Ice King) sometime before the Mushroom War, as revealed in a newspaper clipping in "I Remember You." After he found it, he presented it to a museum. After the war, the Hero's guide somehow ended up in the hands of Key-per at Mount Cragdor, guarded by Mannish Man the Minotaur.

Episode appearances
It first appeared in the episode "The Enchiridion!" in which Finn passes a series of trials to obtain it.

Finn kept the Enchiridion, and it subsequently appeared in the episode "Evicted!," when he threw it at a worm on his bed. The book makes notable appearance in "Another Way" in which Finn reads about magical Cyclops tears while the Clown Nurses are healing his broken foot. Its next appearance was in "In Your Footsteps." Finn used it to knock the food out of the Bear when he was choking. Later, Finn gives it to the Bear so he can learn to be a hero, but it is soon revealed that the reason the Bear took the book was to give it to the Snail - who is being possessed by the Lich.

In the episode "The Lich" the book is shown to have magical properties, allowing a user to be able to have access to all of the multiverse's many dimensions. This is done by having possession of magic gems and inserting the gems into their appropriate slots. It has been destroyed by Finn by having it bashed against his knee. It opened the portal as soon as it was broken.

Appearance
The Enchiridion is a dusty, faded, old book. It is in bad condition, with pages, bookmarks, and tabs sticking out of it. There is a bird, a skull, some grapes, and a sword in the center of the cover. Around the center is a ring of six gems. There are also two shields at the bottom and the word "Enchiridion" on the top front. Binding the book's corners are metal caps. On the back 8.13.21 is written.

The middle of the book contains slots that can be filled with gems. To access the middle of the book one must twist the sword to the right. When gems are placed in the correct order, lights shine through the gems on the cover and the book vibrates wildly. The skull starts chanting and then explodes. During which the grapes wither the leaf falls and the bird flies away. The sword starts to slice the book in half down the middle. Once done slicing, the blade moves into the groove where a black substance emerges from it causing the whole book to turn into a dark brown stone.

Uses
The Enchiridion is, as stated above the heroes guide, indicating it is used to advise heroes in their journeys. The book contains chapters, each relating to a different subject like "How to Kiss a Princess". The Enchiridion also contains the ability to create an artificial passage into different dimensions explained in the episode "The Lich". To activate this portal one must turn the sword on the cover to the right, which opens a hidden compartment where the gems of power need to be put. Placing all the gems in their correct positions, will cause; After the sword completely cuts the middle of The Enchiridion into a loop, a black substance will ooze from the crevice, and turn The Enchiridion to a brown stone. Upon breaking the stone, the portal to the other known universes and dimensions will open.
 * The skull to chant, and explode
 * The grapes to wither and fall
 * The dove to fly away and
 * The sword will cut down around the vertical middle of the book

After the Enchiridion was turned into the stone and broken by Finn, it was presumably destroyed, and has not been seen since.

In the episode "In Your Footsteps", Finn states his main use The Enchiridion, is using it to sit on when the grass is wet, a misuse of the ancient text.

Billy (The Lich) states that the book holds great power, at this Finn blushes, because he knows he has misused The Enchiridion, and then carelessly gave it to the bear.

Chapter four
Part of chapter four can also be seen. It reads:

"Brave hero, let your sword be sheathed, for though it be your best and most trusty tool, ... cannot help you... the trecherous terrain upon which you now embark. A great warrior must scale the highest towers, maim the wicked, and throttle Ageiny demons, but these challenges alone make not a..."

Chapter five
Chapter five is titled "How to Kiss a Princess", which Finn found very useful and embarrassing, considering he blushed as he read it. He glimpses it when he first opens the book. It reads:

"Kissing a princess is different than kissing your grandmother or your mother... Very different. A peck on the cheek is not going to cut it. Nothing but lip on lip action will suffice with a true princess. It's best to first practice on a lip monster, but proceed with caution because, as everyone knows, a lip monster can easily kiss ... death!"

Chapter nine
Chapter nine appears to end in a short story. What can be read clearly is:

"'..rock-and-roll dreams will come true,' the young man told the scribe. 'The music is your master, you hear it calling you,' the boy giggled, rubbed his hat and...n into the night. He never...ited him again. The satchel he left behind cried with a giant voice everytime it was opened. It freaked the scribe out, he never had a sword that powertrful underneath his...or. Upon extended use,... montages tend to make him filled with nausea. ...everyone in the whip...meadow kept it on...whoever thinks its...scales tend to...ing it up with...our family...even..."

Chapter ten
Finn reads chapter ten in "Another Way," The Cyclops, "Deep in the Forest of Trees, there's a cyclops whose magical tears can heal any wound." Part of the chapter can also be read:

"What Cyclopses lack in depth perception, they make up for in being really tall and crying a lot. They have pretty bad emotional problems. Cyclops, if you are reading this: get over it. We all have problems (see appendix B.) but you don't hear us complaining about it. Cyclopses have magic teardrops that possess mystic healing abilities. They are made of a combination of echinacea, chicken soup, toad potion, apple juice, celery soda, ginseng, rocks, and marshmallow mold. They live in forests, mountains, or hills."

Trivia

 * In chapter four, the word "treacherous" is spelled incorrectly, leaving out the "a."
 * On the back of the book there are three numbers from the Fibonacci sequence: 8, 13, and 21.
 * The line, "The music is your master, you hear it calling you" from chapter 9 resembles a line from the Led Zeppelin song Houses of the Holy that says, "Let the music be your master. Will you heed the master's call?"
 * In the episode, "In Your Footsteps," Finn reveals he often uses the book as a seat when the grass is wet.
 * A SteelBook case, designed to look like the Enchiridion, will come with the game Adventure Time: Hey Ice King! Why’d you steal our garbage?!!.
 * On the bottom left corner of the Enchiridion book, a different form of writing is present. It resembles the Elvish form of writing from J.R.R. Tolkien's Lord of the Rings.
 * In Adventure Time: Hey Ice King! Why’d You Steal Our Garbage?!!, The Enchiridion is a usable item.
 * In "Evicted!," a book that Finn threw to the worm is like the Enchiridion.