How to 1-turn turbo Quintet Magician
Combo#1
Initial cards:
1 Apprentice Illusion Magician
1 Magician Souls.
Steps:
1) SS Apprentice by discarding any card to grave
2) Activate Souls and dump DM Girl to GY
3) SS DM Girl using Souls effect
4) XYZ summon Norito using Apprentice and DM Girl
5) XYZ Norito into Ebon Illusion Magician
6) Activate Ebon effect to SS DM
7) Use DM to Link summon Imduk
8) Link summon Predaplant with Ebon + Imduk
(You now have 5 different spellcasters in the grave)
9) Activate Predaplant effect to copy Magicalized Fusion and summon Quintet Magician by banishing all 5 spellcasters in GY.
Combo#2
Initial Cards:
1 Magicians Rod
1 Magician Souls
Steps:
1) Send DM to GY with Souls, then use Souls effect to sp summon DM
2) Normal Rod, search Soul Servant
3) Activate Servant, chose Mahad, then use servant 2nd effect to draw which will sp summon Mahad
4) Overlay Mahad + DM into rank 7 xyz spellcaster (Ebon Illusion or Ebon High). Use Illusion for an extra DM in field If you want.
5) Link summon Anaconda with Ebon + Rod,
6) Use Anaconda to copy Magicalized Fusion to sp summon Quintet Magician.
Other Strategies:
Your next strategy after Quintet should be to get DM Dragon Knight along with Eternal Soul and Circle with Apprentice acting as your Honest ATK boost. You can get to DM Dragon Knight using Keeper to search Poly, next using Keeper 2nd effect to sp summon DM from grave, and then using poly on DM + Keeper to get DM Dragon Knight. Keeper can also search Fusion Deploy and Magicalized Fusion should you need that. Aside from that, other ways to summon Dragon Knight are:
Phantazmay + DM with Secrets or Poly
DM + Imduk with Secrets or Poly
DM + enemy Dragon using Super Poly
DM + Eye of Timaeus
Notes:
There are other ways to 1-turn turbo Quintet with this deck but they may require 1 more necessary card. The listed combos are the least resource intensive.
Should you be wary of hand traps/negates, I suggest you bait them out with your other starting cards first or use Apprentice next since her effect isn't necessary to pull off the combo anyway.