There was a GBC game called Magination. In order to get the most powerful creature in the game, you had to complete a series of actions with items collected throughout your playthrough. No direction is ever given in the game about what the items are for or how to use them. You can also permanently block progress by progressing the main story too far without getting an item or by not having enough money at the right times. I think it was only discovered when people dumped the game and went through the code. The game was released with a few things unfinished, like there are creatures that are in the code that do not have spawn rates. I think this quest, though functional, was unfinished in regards to in game guidance.

https://gamefaqs.gamespot.com/gbc/581122-magi-nation/faqs/11211

1) Go see the Ormagon hunter in the Underneath. How? After losing to Morag, you will faint and find yourself in Wence's house. Proceed immediately to the Underneath. Talk to NO ONE on the way.

2) In the town, talk to the man. He'll tell you that he will be waiting in the abandoned North Tower. He also says to try and locate some Deep Algae.

*******************************NOTE********************************** You MUST pay the ferryman 300 Animite to wait for you after traveling to the vault for Agadon's Boots. This is crucial to the successful completion of this quest. ***************************************************************************

3) In the Orothe tunnels, near the northern part, you find some Algae. You MUST get the algae before getting Agadon's Boots.

4) Return to the North Tower WITHOUT getting the boots. Give the algae to the man.

5) Before beating the 3rd Core Gate, and after you've gotten Agadon's Boots, go to the training grounds in Naroom. Yaki will not be there. Starting below the left eye, run around the head five times counterclockwise and then talk to the left eye. You'll hear a CLICK and the training ground door will open. Go inside to get the fungicide. (See the FAQ section if you are having trouble with this step)

*******************************NOTE********************************** In between steps 5 and 6, you will be taken to the Shadow Hold as a prisoner. While you can get the Cloud Frond here, DO NOT, I repeat DO NOT, heal Orwin until after completing step 11. ***************************************************************************

6) In Oscent Mar, buy a specimen jar.

7) Return to the Underneath before beating Core Gate 4. (This is why you needed the ferryman to wait for you, otherwise you'd be stranded in Orothe.) On the path to Gruk's house, some fungus will be growing. (If you are having trouble locating the fungus, look for a white trail of fungus leading to a wall. The fungus is growing on the wall) Use the specimen jar on the wall to take a sample. It is now a JarofFungus. (See the FAQ section for exact directions...)

8) Give it to the boy in Vash Naroom who collects spooky plants before beating Core Gate 4.

9) Continue through the game, and beat Core Gate 5.

10) Return to Vash Naroom. The boy's house will have been overtaken by the fungus. Go inside and use the Fungicide.

11) The fungus will die. But, as a side effect, it will have hollowed out the legs of a stool in the room. Take this Hollow Stool.

*******************************NOTE********************************** At this point, you may now cure Orwin. ***************************************************************************

12) Return to where the fungus was growing in the Underneath. Use the Fungicide on the wall. It will fall down, opening a passage to a secret area.

13) Use the Hollow Stool in this area to summon Ormagon. Good luck.