A cup of Christ?

Icons have been used through much of Christian history to convey certain truths of Scripture. Some Icons are obviously heretical (ie. a depiction of the Trinty with three "Jesus" heads), while others may be helpful. This icon is meant to convey the "true presence of Christ" in the Eucharist.

I don't think this was what Jesus had in mind when He said , "this is my blood." Yet, it does give pause for thought.