Aleister Crowley accepted the Eucharist in his book, Magic in Theory and in Practice. Most Christians would not comprehend that their so called Christian rite is celebrated by men and women who worship demons and advance theories on black magic. It may appear a strange contradiction that black magicians embrace a Christian rite but the reality is that there is nothing Christian about the Eucharist.
Today Gnostic churches embrace the Eucharist and the holy sacraments of the Catholic church in many different magical societies. A simple google search on "Gnostic Church" will reveal many strange orders.
From the book, Magic in Theory and in Practice:
One of the simplest and most complete of Magick ceremonies is the Eucharist. This sacrament is secret in every respect. For those who may be worthy, although not officially recognized as such, this Eucharist has been described in detail and without concealment, "somewhere" in the published writings of the MASTER THERION. But He has told no one where. It is reserved for the highest initiates, and is synonymous with the Accomplished Work on the material plane.
It is the Medicine of Metals, the Stone of the Wise, the Potable Gold, the Elixir of Life that is consumed therein. The altar is the bosom of Isis, the eternal mother; the chalice is in effect the Cup of our Lady Babalon Herself; the Wand is that which Was and Is and Is To Come.
The Eucharist of "two" elements has its matter of the passives. The wafer (pantacle) is of corn, typical of earth; the wine (cup) represents water. (There are certain other attributions. The Wafer is the Sun, for instance: and the wine is appropriate to Bacchus). The wafer may, however, be more complex, the "Cake of Light" described in Liber Legis.
With regard to the preparations for such Sacraments, the Catholic Church has maintained well enough the traditions of the true Gnostic Church in whose keeping the secrets are.
A Eucharist of some sort should most assuredly be consummated daily by every magician, and he should regard it as the main sustenance of his magical life. It is of more importance than any other magical ceremony, because it is a complete circle. The whole of the force expended is completely re-absorbed; yet the virtue is that vast gain represented by the abyss between Man and God.
The Eucharist is not a Christian rite. It is a magical rite.
From the Gnostic Church of LVX (*falsely so called, because they are not gnostic but pagan):
The ceremonies of the ancient Greek-Pagan mysteries are a forerunner of the latter Gnostic and Christian Eucharist. With the onset of the Piscean Age, The Pagan mystery cults based their Eucharistic ceremonies on death and resurrection of the Solar God with the object enabling the initiate to vicariously or symbolically take part in this death and resurrection and so attain eternal life. Generally, an animal was selected to represent the Dying God and then ritually killed. Sometimes the animal’s blood was poured over the initiate(s) and in other cases, it was imbibed; a form of the Bloody Sacrifice. The flesh was also eaten in a ceremonial meal; all clearly suggesting the life force of the god being absorbed in the human body. The Master Therion delineates this quite well in MITP:.
One of the simplest and most complete of Magick ceremonies is the Eucharist. It consists in taking common things, transmuting them into things divine, and consuming them. So far, it is a type of every magick ceremony, for the reabsorption of the force is a kind of consumption; but it has a more restricted application, as follows. Take a substance symbolic of the whole course of nature, make it God, and consume it
Jesus did not die on the cross in the Holy Quran.
Surah 4:157 "And because of their saying: We slew the Messiah, Jesus son of Mary, Allah's messenger - they slew him not nor crucified him, but it appeared so unto them. And lo! those who disagree concerning it are in doubt thereof; they have no knowledge thereof save pursuit of a conjecture; they slew him not for certain. But Allah took him up unto Himself".
The appearance of Jesus went onto another man who was crucified in place of Jesus. Jesus was later taken up into the Heavens.
From Jesus through Shiite Narrations, Al Islam.org:
Jesus lived for thirty-three years; he was not killed nor crucified, but it was made to appear so to the Christians. On the night of the twenty-first of Ramadan he was raised while there were nine thousands three hundred thirteen angles with him. He was raised from the earth alive and his soul was taken between heaven and earth, then he was raised to heaven and his soul was returned to him. He will come down to the world before the Resurrection day with the twelfth Imam of the Household of the Prophet, and invite the people to Allah.
So, Jesus came to Jerusalem, invited them and encouraged them to what is near to Allah for thirty-three years, until the Jews sought him and (afterward) claimed to have punished him and buried him alive. Some of them claimed to have killed him and to have crucified him. Allah did not let them gain sovereignty over him, but it was a mistake they made. They were not able to chastise him or bury him, and they could not kill him or crucify him, because of the saying of Allah, the mighty and magnificent, I am going to take you away and lift you up unto Me and purify you of those who disbelieve (3:55) So, they were not able to kill him or crucify him, for if they had been able to do so, this would belie His saying, Allah raised him up unto Himself(4:158)
They did not kill nor crucify him, but it appeared to them so (4:157).
Likewise, the occultation of al-Qa’im (‘a), then the community will deny it.”3
4. I asked him [Imam] about the nights of the month of Ramadan in which ghusl [major ritual ablution] is recommended. Then he said, “The nineteenth, the twenty-first and the twenty-third.” And he continued, “On the night of the nineteenth, it is written who will go on the hajj, and every wise affair will be distributed in it. On the night of the twenty-first, Jesus (‘a) was raised and the executor of Moses was taken in it, and the Commander of the Faithful was taken in it….”
18. Abu Ja‘far (‘a) said, “Verily, Jesus (‘a) invited his companions [to come] the night when Allah would raise him to Himself. So, they were gathered before him at evening, and they were twelve men.
He brought them into a house, then he came out to them from a fountain in a corner of the house while the water was flowing from his head, and he said, ‘Verily, Allah revealed to me that He will raise me to Him now, and He will free me from the Jews. Which of you will bear my semblance, then be killed and crucified and be with me at my level?’ A youth among them said, ‘I, O Spirit of Allah!’ He said, ‘So, you are he.’ Then Jesus said to them, ‘Beware! Among you there is one who will disbelieve in me before twelve men become disbelievers.’ A man among them said, ‘I am he. O prophet of Allah!’ Jesus said to him, ‘If you feel it in yourself, you are he.’ Then Jesus (‘a) said to them, ‘Beware! After me you will divide into three sects. Two sects will blaspheme Allah and they will be in the Fire, and one sect will follow Sham‘un, be true to Allah, and they will be in the Garden. Then Allah raised Jesus from the corner of the house, while they were looking at him.” Then Abu Ja‘far (‘a) continued, “Verily, the Jews came seeking Jesus that night, and took the man about whom Jesus (‘a) had said that he would disbelieve in him before twelve men became disbelievers. And they took the youth upon whom the semblance of Jesus had been cast. Then he was killed and crucified. And the one about whom Jesus (‘a) had said that he would disbelieve in him before twelve men became disbelievers disbelieved.”
Judas is thought to have been hanging on the cross instead of Christ.
From the Gospel of Barnabas:
Then the four angels narrated to the Virgin how God had sent for Jesus, and had transformed Judas, that he might suffer the punishment to which he had sold another.
Then said he who writes: 'O Master, is it lawful for me to question you now, as it was lawful for me when you dwelt with us?' Jesus answered: 'Ask what you please, Barnabas, and I will answer you.' Then said he who writes: 'O Master, seeing that God is merciful, wherefore has he so tormented us, making us to believe that you were dead? and your mother has so wept for you that she has been near to death; and you, who are an holy one of God, on you has God suffered to fall the calumny that you were slain amongst robbers ;on the Mount Calvary?'
And though I have been innocent in the world, since men have called me "God," and "Son of God," God, in order that I be not mocked of the demons on the day of judgment, has willed that I be mocked of men in this world by the death of Judas;, making all men to believe that I died upon the cross. And this mocking shall continue until the advent of Muhammad, the Messenger of God, who, when he shall come, shall reveal this deception to those who believe in God's Law. Having thus spoken, Jesus said: 'You are just, O Lord our God, because to you only belongs honour and glory without end.'
The final Testament of the God of Israel is the Holy Quran, revealed to mankind from angel Gabriel. God asserts Jesus was not crucified on the cross. Another man took Jesus' place. The Eucharist is part of mystery religions which found its way into Christianity. No human sacrifice is needed for the forgiveness of sins. The Jews had their sins forgiven before the ministry of Jesus Christ. The Quran places King Solomon in Paradise. King David had all of his sins forgiven before the "cross" of Christianity.
The Passover is a celebration of the journey of Israel out of Egypt and is a valid celebration. We shouldn't mix pagan mysteries with the true religion.