Maya's main Artifice is her constant spamming of Evade. This functionally allows her to evade two hits per turn.
Her secondary Artifices are her HP Regeneration and her 4-hit Act 2. Her Regeneration penalises dragging on the battle for too long, while her 4-hit Act 2 can easily remove evades and fortitude.
All attackers, and essentially anyone who isn't a tank, ought to have a perfect aim memoir equipped. These are the most common memoirs you will come across that can be used, though there are, of course, other ones. 3★ Stretching Help...? is the ideal memoir for your attackers if max bound broken, but the ad-gacha version will suffice.
3★ Martial and Dramatic Arts
Ad-gacha (DMG + Perfect Aim)3★ Stretching Help...?
(Effective Element DMG + Perfect Aim)3★ Idle Banter for Two
(DMG + Perfect Aim)3★ Present for the Detective
(DMG Received Down + Perfect Aim)Her Normal Act 2 can be exploited to your advantage through the mechanic known as Counterheal. If Maya uses her Act 2 against a Wind tank with counterheal, they will heal up almost 40% of their HP, enabling them to survive longer and carry you to victory. Note that only girls that can give counterheal within 2AP are acceptable - this means 4🟊 Arthur Karen, Marion Shizuha, or Miko Mahiru. This means, however, that you have to accept that Maya will regenerate a substantial amount of health. Alternatively, you can use a hyper-offensive team that does not employ counterheal and simply smites Maya into dust.
This boss is extremely rare and has not appeared for an extended number of rotations. Hence, it will not be updated further.
1) Standard Full Team
Only if you don't have Nurse Mei Fan. Using Miko Mahiru as a counterhealer, with Cinderella Mahiru and one other tank, and two wind attackers, Shuten-doji Fumi and Fuma Kotaro Yuyuko.
1) Why waste any time?
Nurse's absorb, when stacked, can allow her to sustain through Maya's damage. For speeding up the run, use a single offensive Unit Skill of the midrow or wind type.
This will range between 7 to 9 turns depending on the Unit Skills of your girls involved.