According to Mazao herself, her ability to summon illusionary weapons using the Power of Return isn't very effective in the Doomsday Era.
Because the omnipresent frenzy dissolves the memories of survivors of the Doomsday Era, even if she had previously encountered other magical treasures and weapons, she would forget them and be unable to summon them.
The prerequisite for summoning illusionary weapons is having a certain degree of understanding of the original, including the specific effect and feel of the weapon, as well as past experiences of using it. These memories have both a knowledge nature and a narrative nature, a mix of abstract understanding and concrete sensations, both of which must be combined to successfully transform the impression into reality.
In the past, Mazao could only remember deeply how to summon her most proficient Illusionary Curved Blade, and anything more was beyond her reach.
