If the scripture teaches transubstantiation, then we must believe that Christ ate His own flesh and blood, and will continue to do so, even in heaven. Check your chronology. It is not your friend:
1) He gives thanks, breaks the bread, declares it is His body: “And when he had given thanks, he brake it, and said, Take, eat: this is my body, which is broken for you: this do in remembrance of me.(1Co 11:24)
2) After “he had supped,” He offers the cup, which He calls His blood: “After the same manner also he took the cup, when he had supped, saying, This cup is the new testament in my blood: this do ye, as oft as ye drink it, in remembrance of me.” (1Co 11:25)
3) After calling it the blood of the covenant, with the cup still in hand, He calls it “this fruit of the vine” which He would not drink AGAIN until reunited with the Apostles in heaven, either indicating He was about to drink it, or had just drank it: “for this is my blood of the covenant, which is poured out for many for the forgiveness of sins. I tell you I will not drink again of this fruit of the vine until that day when I drink it new with you in my Father’s kingdom.” (Mat 26:28-29)
Notice also that he continues to call it “the fruit of the vine” even after it had supposedly been transformed.
Furthermore, you do not have a sacrament of “living water,” which is necessary to drink in order to possess eternal life:
Joh 4:14 But whosoever drinketh of the water that I shall give him shall never thirst; but the water that I shall give him shall be in him a well of water springing up into everlasting life.
Joh 4:15 The woman saith unto him, Sir, give me this water, that I thirst not, neither come hither to draw.
The scripture does not teach transubstantiation, and neither did Augustine and many other Church Fathers.
1 Corinthians 12:27
All of you together are Christ's body, and each of you is a part of it.
Well, using the often-used RC hermeneutic, since the Scripture does not say He did not and would not, then it can be, if Rome says so.