CONTEXT: I initially posted this Deck and pasted 4+ pages of text which broke the page (the "Read More" button literally disappeared), so I am posting this in 2 parts to make it shorter and keep things easier to digest and read.
PART 2
The new retrains of the XYZ Union Monsters and XYZ-Dragon Cannon from the LIGHT Duelist set are just so incredibly cool. They are able to facilitate cards like ABC-Dragon Buster, the original XYZ-Dragon Cannon, A-to-Z-Dragon Buster Cannon, as well as their new Fusion boss monster so easily. X-Cross Cannon, the retrain of X-Head Cannon, by itself is practically full combo in most cases for the Deck. I tested what the Deck could do as soon as I saw that their new boss, XYZ-Hyper Dragon Cannon, was a Level 9 monster and I simply just tested the Deck with ABC first. This version of the Deck can put out 2 to 3 copies of Dragon Buster onto the field easily, but it all came at a cost. X-Cross Cannon’s effect to equip a LIGHT Machine Union Monster from Deck to it as well as the on-Summon effects of Y-Dragon Yearhead and Z-Zillion Tank locked you into LIGHT monsters from the Extra Deck. When you put this into context for Prediction Princess, that means that you cannot go into Mereologic Aggregator which is such a powerful card for the Deck as it is a DARK monster. It can send Herald of the Arc Light from Extra Deck to GY for a search and being able to reattach it, getting another search once you Link Aggregator off which is incredible for a Ritual Deck. The thought of forgoing Aggregator put me on a search for a way to not have to use the effects of the new Unions to prevent myself from being LIGHT-locked so that I could access Aggregator. And that became a futile search several times a month. So, I finally decided to move past that and just give up on trying to Summon Aggregator which apparently was the thing holding me back this entire time when it came to making an XYZ Prediction Princess Deck. This version of the Deck that I ended on utilizes Torque Tune Gear to Synchro with any of the Level 4 Unions into Ib the World Chalice Justiciar to have access to World Legacy Monstrosity. We would simply make Ib before activating X-Cross Cannon’s effect to equip from Deck, allowing us to get the materials for XYZ-Hyper Dragon Cannon on field/GY, giving us a Level 9 target on field for Monstrosity which would then get us Prediction Princess Bibliomuse and either Deus-X Krawler or Pot of the Forbidden from Deck. That gives access to Bibliomuse, so as long as we draw access to a Ritual Spell and a Ritual Monster, we have full Prediction Princess combo which does not require us to go into the Extra Deck at that point as we are just Ritual Summoning from there. But the Ib and the remaining Level 9 on field can be used as Link Material for Silhouhatte Rabbit and we are playing a target for it which gives us 2 pieces of interaction alongside Hyper Dragon Cannon for another interaction all in addition to our Prediction Princess plays. But let’s say that we do not draw the Ritual part of our Deck. Well, as I have mentioned, X-Cross Cannon is basically full combo for the Union half of the Deck, so we can just use it to get to Hyper Dragon Cannon as well as have enough material on board to put other forms of interaction onto the field. I’m going to describe the combos for if you have Ritual access as well as if you don’t have Ritual access.
For full Prediction Princess combo, you need Union Hangar, X-Cross Cannon, and Ritual access, which we will say is Prediction Princess Tarotrei and Prediction Ritual for this example (Pre-Preparation of Rites also works here). Activate Hangar and search for Torque Tune Gear. Normal Summon Tune Gear which triggers Union Hangar to equip Union Driver from Deck to it. Driver effect to banish it to equip Y-Dragon Yearhead from Deck to Tune Gear (you could also equip Z-Zillion Tank instead, just get the remaining one later in the combo). Y-Dragon unequips itself to Special Summon itself. Now that you have a LIGHT Machine Union Monster on field, activate X-Cross Cannon in hand to Special Summon itself. Synchro Tune Gear and Y-Dragon into Ib the World Chalice Justiciar. Ib searches for World Legacy Monstrosity. Activate X-Cross Cannon to equip Z-Zillion Tank to it. Banish X-Cross Cannon, Y-Dragon Yearhead, and Z-Zillion Tank to Special Summon XYZ-Hyper Dragon Cannon from Extra Deck. Activate Monstrosity targeting it for Prediction Princess Bibliomuse and Pot of the Forbidden from Deck. Link Pot and Ib into Silhouhatte Rabbit. Rabbit activates to set Silhouhatte Trick from Deck. Activate Prediction Ritual tributing Bibliomuse to Ritual Summon Tarotrei. Bibliomuse Special Summons herself back from GY face-down. Tarotrei flips Bibliomuse face-up. Bibliomuse activates to search for Prediction Princess Tarotreith and Underworld Ritual of Prediction from Deck. Activate Underworld Ritual tributing Bibliomuse to Ritual Summon Tarotreith face-down. Proceed to End Phase and you could activate Tarotrei to Summon back Pot from GY or don’t so you can get Bibliomuse and Deus-X from Deck during your opponent’s Standby Phase. I prefer this over Pot either way. So that gives you Silhouhatte Rabbit with a Spell/Trap pop when you Special Summon a card from your Spell/Trap Zone, Silhouhatte Trick which is 1 to 2 targeted negates on its Summon, Hyper Dragon Cannon which Quick Effect discards a card to pop a card your opponent controls, Tarotrei who flips Tarotreith face-up during your opponent’s Standby, Tarotreith’s Flip Effect getting you Deus-X which is a continuous monster effect activation negate after Tarotreith flips it face-up, and Underworld Ritual in GY gets you Bibliomuse from Deck who can be flipped face-up with Tarotreith and her Flip Effect gives you 2 searches for follow-up. All of your Monster Zones are filled including your EMZ, so you will have to either wait for your opponent to clear a monster for you to use Silhouhatte Trick. Normally, I would clear my field with I:P’s effect to Link Summon, but we were locked into LIGHT monsters from the Extra Deck. Furthermore, this is a really nice combo as it has the non-Prediction Princess side of the Deck on our endboard for interruption whereas these Decks that I make experimenting with different Level 9’s usually forgo that monster once I use it to make Aggregator, so it is nice to see this.
For the non-Ritual combo, you just need X-Cross Cannon. Normal Cannon and activate its effect to equip B-Buster Drake from Deck to it. Unequip B-Buster Drake to Special Summon it. Link them off into Platinum Gadget. Buster Drake triggers in GY to search for Y-Dragon Yearhead from Deck. Activate Platinum Gadget to Special Y-Dragon from hand. Y-Dragon activates equipping Buster Drake from GY. Banish Plat Gadget and Y-Dragon to Special Summon Union Controller from Extra Deck into the EMZ. Union Controller Chain Link 1 and Buster Drake Chain Link 2. Buster Drake searches for Z-Zillion Tank and Controller searches for Union Hangar. Activate Hangar which searches for another Z-Zillion Tank. Activate Union Controller to Special Summon Z-Zillion Tank from hand. Chain Link 1 Z-Zillion Tank and Chain Link 2 Union Hangar. Union Hangar equips Union Driver from Deck to Tank and Tank equips Y-Dragon from banished to itself. Unequip Y-Dragon to Special Summon it and activate its effect to equip Z-Zillion from hand to it. The equipped Z-Zillion unequips itself to Special Summon itself. Union Driver banishes itself to equip Torque Tuner Gear from Deck to Tank. Unequip Torque Tune Gear to Special Summon itself. Now, looking at your field, you have Union Controller in the EMZ, 2 Z-Zillion Tank, 1 Y-Dragon Yearhead, and 1 Torque Tune Gear. We can do several things here, so I will go through all of them. (1) you can Synchro Tune Gear and Union Controller into F.A. Dawn Dragster. Then, you can Link a Tank and Y-Dragon into Silhouhatte Rabbit who sets Silhouhatte Trick from Deck. And finally, you can banish X-Cross Cannon, Y-Dragon Yearhead, and Z-Zillion Tank for Hyper Dragon Cannon. This gives you a pop with Hyper Dragon Cannon, a Spell/Trap negate with Dawn Dragster, a Spell/Trap pop with Rabbit when you get out Hatte Trick, and Hatte Trick is 1-2 targeted negates on Summon. (2) You can Link 4 monsters with different names off into Knightmare Gryphon. Then, you could use its effect to get a Normal Spell like Terraforming, Pot of Prosperity, or even Pre-Preparation of Rites from GY and set it for next turn if you did get them into GY previously. Next, banish the materials for Hyper Dragon Cannon and Summon it to Linkpoint. This gives you a potential follow-up if you set a card off of Gryphon, a pop off of Hyper Dragon Cannon, and Gryphon itself prevents monster effect activations of Special Summoned monsters on the field unless they are Linked. It’s not great, but considering we are LIGHT-locked, this is something you could be doing. (3) Link Union Controller and a Level 4 into Silhouhatte Rabbit and set Hatte Trick. Tune Torque Tune Gear and a Level 4 into Denglong, First of the Yang Zing, and if you sided in a copy of Nine Pillars of the Yang Zing, you can use Denglong to search for that. Then, Synchro Denglong and the remaining Level 4 into Chaofeng, Phantom of the Yang Zing before banishing the materials for Hyper Dragon Cannon and Summoning it. This gives you a Spell/Trap pop off of Rabbit when you Summon Hatte Trick, 1-2 targeted negates when Hatte Trick is Special Summoned, a pop off of Hyper Dragon Cannon, your opponent cannot activate LIGHT monster effects while Chaofeng is on the field, and you have an omni-negate in Nine Pillars which does get rid of your Chaofeng but it still does provide good interruption. The fourth option would be to do Fiendsmith combos by going into Moon of the Closed Heaven first to end on a Fiendsmith Dies Irae, but we aren’t playing those cards.