User blog comment:Aswyne/Of Dragons and Swords/@comment-5674726-20121219001349

I'd say that the sword will be for Mordred.

Morgana could reflect on past defeats and realise that some of the threats that were vanquished, like the Black Knight and the first casualties in the immortal army, could only have been killed by a blade forged in dragon's breath. She also may be familiar with the story of Arthur supposedly drawing their ancestor's sword. In that case, she could want to ensure that Mordred isn't set at a disadvantage when he fights Arthur.

Alternatively, she knows nothing about Arthur's dragon-forged sword but wants to tilt the scales in Mordred's favour.