Prove that the commandment to never in any generation drink the blood is somehow cancelled for you and was cancelled before Jesus went to the cross. In the Upper room, the breaking of the bread and the passed cup of wine had to be just bread and wine because Jesus had not yet gone to the Cross. You are twisting scripture to fit the Catholic heresies, defending a blasphemous lie which commands Catholics to believe they are imbibing the actual fleash and blood of Christ! Are you so dense that you cannot see that in the Upper Room, Jesus had not yet died, so the bread and wine HAD TO BE METAPHORICAL. Show me where this was to no longer be metaphorical AFTER the Cross. Jesus broke bread with Luke and one other then vanished. If He had wanted us to be sure and cannibalize Him then and for the coming Church Age He would have explained such an important alteration to the commands before, to those disciples for whom he broke the bread.
Your comment:so the bread and wine HAD TO BE METAPHORICAL
No. Because Jesus said it numerous times and made sure that people understood his exact meaning. It is very clear on how it was meant and understood by the Apostles and Catholics for the last 2000 years. Jesus turned water into wine and other miracles. Jesus has the ability to do whatever he says.
Since you are a doubter, I would suggest that you do a google search. In 1100 in Italy and recently 2008 (approx) in Poland, s soiled Consecrated Eucharist host was held and it turned red. The host was scientifically examined and determined that it was blood and heart tissue (Blood type AB). The full story has been previously posted on FR.
Your comment: “Prove that the commandment to never in any generation drink the blood”
Jesus established the New Covenant based on His sacrifice = blood on the Cross. He ended the Old Covenant and the Jewish mosaic laws. This is not ordinary body and blood, but a gift from Jesus that is the food of eternal life.