What Christ did in the verses just below: partake of Holy Eucharist, His one-time sacrifice on Calvary for our salvation.
Transubstantiation is paganism...attributing divinity to material things. It goes hand-in-had with Rome's paganism concerning Mary. "other Christs," rituals, rites, holy water, wooden statues, etc.
All-in-all, a very consistent paganism.