What is the plural of subpoena duces tecum?

The plural of "subpoena duces tecum" is "subpoenae duces tecum." In legal contexts, "subpoena" is a Latin term meaning "under penalty," and "duces tecum" translates to "bring with you," referring to a type of subpoena that requires a person to produce documents or evidence. The pluralization follows Latin grammatical rules, where "-a" becomes "-ae."