Hello, I am Merlin the magus of flowers and this is my first time writing anything so this fic is going to be a test drive unless I get enough support for it. I do not own the fate series nor RWBY and with no further ado I present to you Fate/ Ceteri Stulti Velit.

There was a certain saying "live long enough to see yourself become the villain". That saying was something Ozpin always disagreed with as he, someone who has been alive reincarnating from body to body for millennia, has never had an evil or villainous host.

But what he was planning to do was making him start to doubt himself. Bringing someone back from the dead no matter what reason, is just cruel in his opinion. Not only that to disturb the rest of a hero but one who was precious to him at that, was making him slightly nauseous.

Fortunately before he had the chance to berate himself any further, the elevator door opened letting in the three people he trusted the most. "So Oz, what's this all about I was just about to beat Yang again in that game of hers." Ozpin smiled slightly. "Well Qrow I was planning to explain to you something that would greatly aid us in defeating the queen."

Ozpin then stood up and motioned to the trio to follow him. A few minutes later saw them standing in the basement where Amber's pod was. " So are you going to explain now Ozpin, please don't forget I have an army to manage" James said. Qrow was about to make a quip about him bringing his army but a look from Ozpin stopped him. He knew that look, it was the look he gave him when things were serious.

"Before we begin, have any of you heard anything about something called the Holy Grail War?". At this question the general was confused " What do you mean Ozpin, I haven't heard of any war happening since the Great War?". Qrow and Glynda were just as confused as James. "Well I'm not surprised none of you heard, it is a ritual from the old world." Hearing this Glynda gasped "The old world? But isn't that from before-" "Yes, a ritual dating back from before dust was discovered-no before even the birth of the first grimm."

"What exactly is this Holy Grail War, if I may ask Headmaster" asked the deputy headmistress. Ozpin sighed as he knew he couldn't stall anymore. "The Grail War or the Heaven's Feel is a ritual created by three mage families called the von Einzbern, the Thosaka and the Makiri who later changed their name to Matou. The families built with the help of a Sorcerer a machine they called the Holy Grail." "And what does this Grail do exactly?" Asked Ironwood. "The Grail is an omnipotent wish-granting machine." said the silver haired man. "Come on Ozpin you've got to be kidding." said Qrow suddenly sober "I'm guessing it ain't easy to get that wish.". "Of course it isn't easy, said Ozpin, let me explain how it works, the Grail chooses seven masters who will be able to summon a hero from the past, present or future from the throne of heroes to fight for them. Each hero is placed in a different class, the classes are Saber the servant of the sword, Lancer the servant of the spear, Archer the servant of the bow, Rider servant of the mount, Caster the servant of magic, Assassin the servant of murder and Berserker the servant of madness. There are a few extra classes, though they are rare and unusual. Now the reason I called you all down here is because we will all summon a Servant."

Time skip a few hours later

"Have you all learned the chant." Said Ozpin. He receives multiple nods of confirmation. As expected, Qrow couldn't resist making a quip about the chant. "You know Oz, if I didn't know you better I'd think we were gonna summon Satan." At this Ozpin just chuckled good naturally and said "With the kind of people that have been summoned before, I wouldn't be surprised if that happened." When he heard that, the dusty old crow paled dramatically as he said "Hey Oz, you're just kidding right, hey I'm serious Oz.".

As they reached the four summoning circles, they all repeated the chant in their head as they went to their circle.

Let silver and steel be the essence.

Let stone and the archduke of contracts be the foundation.

Let blue be the colour I pay tribute to.

Let rise a wall against the wind that shall fall.

Let the four cardinal gates close.

Let the three-forked road from the crown

reaching unto the Kingdom rotate.

I hereby declare.

Your body shall serve under me.

My fate will be your sword.

Submit to the beckoning of the Holy Grail

and become this world of remnant's salvation.

If you will submit to this will and this reason...Then answer!

An oath shall be sworn here.

I shall attain all the virtues of all of Heaven.

I shall have dominion over all evils of all of Hell.

From the seventh heaven,

attended to by the three great words of power.

Come forth from the ring of restraints!

Guardian of the remnants!

A bright blue light emerged from the summoning circles, blinding allfour of them. After a few seconds, they could finally open their eyes as all of them looked in awe at the heroes before them, though they were confused at the appearance of purple and pink flower petals. Except for Ozpin, who only had eyes for one servant, the one in front of him. "Servant Caster has appeared and graced you with his magnificent presence. Now I ask of you are you my master, a mischievous and o so familiar smirk on his face, little brother."

Sooooooo...was it good or bad. I sincerely hope you liked this and review

I don't mind constructive criticism or even flaming so long as you can enjoy the story. I would also like some suggestions for the three other servants and masters. Special thanks to MasterGamer132e for beta-reading. Good day to you all. Merlin out. *disappears in a flurry of flowers*