Forum:Once per turn, during either player's turn...

I recently got into a row with someone on Dueling Network over the function of Constellar Pleiades. His effect states that he can activate his effect "once per turn, during either player's turn". I figured this meant that I can activate the effect once during my turn, then again on my opponent's turn. My opponent claimed that it could only be activated once per set of both our turns (his and I). Which of these is correct? I've always heard that a single turn constitutes from the start of the Draw Phase to the end of the End Phase for one player. Or is it the combination of both these durations for each player?--Bahamutfury13 (talk • contribs) 22:07, November 30, 2013 (UTC)