The Avenger Class Servant (A Fate/Stay Night/Avengers crossover)

The Supreme Dethroned

So, I'm not gonna do this "Hi, everybody" thing anymore.  I'm just going to do my regular thing.  Also, I want all of you to keep on commenting.  I want to hear what you guys think.

This story is going to be very action packed, filled with plenty of magic spells.  I've been doing a bit of research about much of the Nasuverse magecraft spells.

To those confused on how Shirou can do all of these new spells, while in the actual series he can only do Material Transmutation, it's because of the Einzbern Wishing Sorcery Trait, Shirou Kotomine's Noble Phantasms, and Solomon's masterful abilities in all forms of magecraft.

Shirou was walking towards his cafe when suddenly he stopped.

Shirou felt it.

A massive aura of prana, leaking out of a single person.  This person was dressed in a strange yellow outfit and was wearing a hood keeping Shirou from seeing his face.  From what he could tell, Shirou knew was that he was following him.

Quickly, he rushed into an empty alley, with the yellow-hooded figure in hot pursuit.  Shirou, unfortunately found himself in a dead end.  The unknown person followed to find-

Nothing.  There wasn't anything or anyone there.  The figure pulled down the hood, to reveal a bald woman with a confused expression on her face.  Then, she felt a presence and on instinct, jumped out of the way, narrowly dodging Shirou's surprise attack.  Shirou had used his Presence Concealment skill to hide away.  This skill hides his presence from everyone, but is the ability's effectiveness decreases once attack preparations are made.

The woman's eyes narrowed.  She moved her hands and Shirou could feel the mana in the air be sucked in.  It was slow, but potent. Shirou quickly slashed at her with Kanshou, but she managed to dodge and jumped to a wall.  She kicked off the wall and jumped higher to the opposite wall.  She did so again until she was on the rooftops.  Shirou chased after her with a super-powered jump of his own.  Preparing to attack again, Shirou was surprised when the woman waved her hands again.

This time, everything around them seemed to change.  It was like Shirou was looking into a kaleidoscope.

"A mirror world?" Shirou gaped at what was happening.  "Second Magic?  No, Age of the Gods magecraft.  It can achieve similar effects as True Magic."

"That terminology," the unknown magus observed.

She then waved her hands again and the kaleidoscopic surroundings shifted.  This time, Shirou moved his hands, utilizing Kaleidoscope magic he had learned from Zelretch, stopping the movement.  The woman narrowed her eyes.

"Zelretch's disciple," the bald woman said in disgust.  "Monstrosity, I shall eliminate you from this existence."

She moved her hands apart, and then fiery energy erupted from her fists.  The moved to form magical circles.  She rushed forward, using her magic circles as melee weapons.  Shirou blocked each attack easily with his weapons.  Shirou had to admit, this woman was good.  Jumping back, Shirou threw the swords at her, only for the bald woman to block them with her magic circles.

Shirou smiled.  He could tell this woman was a master of this world's magic, so he thought that it would be useful to see how powerful this magic was.  Levitating, Shirou used the signature spell of Medea, the rain of light.  Purple magic circles appeared around him and Shirou pointed them at her.  He then said the magic Divine Words.

"Machia Hecatia Graea!" he shouted.

Rapid fired beams of light, each with A rank power blasted at her.  She focused all her power into defending.  However, Shirou used the prana of one of his beams to negate her shields.  Shirou then directed the other beams to wound, not kill.  She was thrown back, the ground where she stood looked like it was bombed.  The woman growled, and stood, her wounds healing utilizing mystical forces.  She then used her powers to create magical whips, which she attacked with.  Shirou dodged the first strike, but the second whip connected with his foot.  The woman was about to drag Shirou down, until Shirou projected Gae Dearg, which he used to cut the magical whip.