A decks who's entire design philosophy and game plan is based around 1500 defence spellcasters from multiple different archetypes to create a power and varied combo deck with an incredibility unpredictable game plan. The main representative archetypes found in this deck is the charmers acting as the main glue and enforcer of the 1500 defence spellcaster play style, Magistus and Dogmatika with some lesser repersentation from swordsoul and Gravekeeper's.
The Play style can go in two directions based on your opening hands and opponent. The first is attempt to resolve Awakening of the Possessed - Nefariouser Archfiend and go for a link 2, this triggers Archfiends effect to search when it goes to the gy and adds you a possessed spell or trap. Doing this with I:P as the end board target will grant you at least 2 points of disruption on your opponent if we ignore any extra parts of your end board. The other end board options are going for the synchros, namely Zoroa, the Magistus Conflagrant Calamity and locking your opponent out of activating effects based on what is equipped to Zoroa and then backing him up with the charmer/possessed spell and trap line, the Dogmatika members though it is very possible and consistent to end on both Zoroa, the Magistus Conflagrant Calamity and a link 2 in the same turn if you open with the right cards.
One of the free agent cards is Gravekeeper's shaman. What you do is send Gravekeeper's shaman off of magicians souls and then summon the souls (you can make this more consistent by adding more illusions/Rites). From there summon any level 4 or lower earth monster, in this case we have every nefarious eater of nefariousness, Familiar possessed - Aussa and the Magistus of Grimoire Crowley who can change his attribute and then send the souls and the traptrix to the gy and that will let you summon awakening of the possessed nefariouser archfiend from the deck who's effect is monster reborn on any level 4 or lower so bring back a monster and then link summon away awakening of the possessed nefariouser archfiend and another monster which will then trigger archfiends search effect which will add Possessed partnership, a trap that can summon any 1500 def spellcaster from hand or gy and if you control 2 or more face-up monsters with a different attribute, it becomes non targeting face-up removal as well. This can also be used to summon both Eccelsia, Zoroa, etc who is also in this deck. So what you get is a consistency engine from magicians souls with doubles as both extenders and draw power, A blanket negate all activated monster effects in the gy on a passive effect from gravekeeper's shaman and a powerful removal trap that doesn't target and can be used to summon other cards if needed. This combo is very strong against any deck the uses a lot of monster effects in the gy. This namely includes Tearlament which when timed right (likely after a large mill or they've normal summoned) can end the Tearlaments player's entire game.
Incredible Ecclesia, the Virtuous's use is more simple since she is both an extender and a soft super poly enabler by summoning Fallen of Albaz from the hand or deck, making her an amazing surprise option and double removal that can potnetially not eat up your normal going 2nd and removal 2 monsters at once if Ecclesia is summoned using possessed partnership. Incredible Ecclesia also lets the deck run the Albaz fusion monster line up which is very strong as a whole and gives the deck more options and even lets you summon or search Dogmatika monsters by sending titaniklad the ash dragon off of the effect of mirrorjade the iceblade dragon after summoning it by using an oppenets extra deck monster.
Overall the deck is a lot more powerful then it let's on and makes the best use of all the 1500 defence spellcasters has released over the years and the support that Konami released with the Charmers structure deck to make a deck with tons of options, adaptability and tech options that can take on even the strongest of meta decks thanks to how powerful it’s lock down can potentially can be and it will only get better as Konami releases more spellcaster themes and cards with the prized 1500 def stat line.