Just because. Elric gets anywhere between two days and a year of prep. Where he is in his personal timeline is entirely at your discretion, but any power-ups or special items he only possessed briefly (e.g., the Chaos Shield) are off the table unless he can actually regain them under standard rules, nor will he simply order the Mournblade off whichever relative wields it at the time.
Lord Arioch has wisely opted to unlist his number for the duration of this fight. Who's the true tag-team champions?