I've been thinking about this for a story I wanted to do, but I figured why not get everybody the same challenge. here's how it works: you and your characters you've created have to complete 100 trials to see if you have what it takes to be a true king or queen of your Imagi-Nation(the prologue will explain). now you will have too come up with the trials yourself or be inspired by some thing because I can't think it for you, but here's an example of the trials I came up with for myself:
1- kill typhon
2- kill the 12 Olympian "gods"
3- kill azhi dahaka ( a three headed dragon in Persian mythology)
4- kill Scylla and Charybdis
5- resealing a minotaur
6- retrieve 3 magic rings that supposed to make the barer invincible
7- travel to the end of the longest road in the world before the evening on the same day (without help from travelers)
8- clean a kingdom that is ruled and populated by animals before sunset
9- retrieve a chalice from a temple of light before its doors close forever after sunset
10- have sex with all your female characters without one finding out the other

those are the only ones I came up with for now. I will update more later and make stories about how I accomplish each feat. anyway, you can come up with stories of your trials, draw scenes of a trial with a description, I don't care, just send me a version of your trials to me so I can see how you achieved greatness. Oh by the way, you can also have characters from other titles to help you, like link, renamon, falco, ect. just be sure to put this character is copywrited bla bla bla. so I wish you all luck and let the trials begin!

prologue
you were sitting in your throne room celebrating who knows what, when all of a sudden the doors burst open and a man stepped in the room. you ordered the guards to throw him out side, but the man refuses and says, "you are not worthy of the crown above your head," "how dare you say that!" you said getting up from your seat. "all you do is sit around your castle being lazy and throwing parties." "that's not true," you said.
"prove it,"
"alright, how about I do a couple of trials to prove my worth,"
"sounds fair,"
"alright how many do you think I should do?"
"50"
"50! are you-wait, i'll do you one better I see your 50 and raise you a 100." "you can't do a 100"
"wana bet?"
"alright, how much?"
"no not money, heres how it works, if I win, you admit to the whole kingdom you were wrong about me. if I loose, even one trial, then I will give up my crown, deal?" "...deal" at that you two shook hands. "but I choose what tasks you'll do" says the man. "fine."

this will help you get started ^