The ideal Prediction Princess Deck that you want to play Summoner of Illusions (SoI) in is a Deck where you are focusing on using specifically World Legacy Monstrosity to give you the Level 9 bodies on field to Xyz Summon Mereologic Aggregator. Because not only will this give you access to Prediction Princess Bibliomuse to access the rest of your Prediction Princess combo, but it also allows you to put Deus-X Krawler or Pot of the Forbidden into rotation for Prediction Princess Tarotrei to Special Summon back from the GY in face-down Defense during the End Phase. That way, you can use Prediction Princess Tarotreith’s Flip Effect during your opponent’s turn to Special Summon SoI from the Deck face-down to actually use its effect alongside benefitting from Deus-X Krawler’s effect. This is a Runick Prediction Princess Deck that goes all into making Ib the World Chalice Justiciar to search for Monstrosity. While Runick Prediction Princess may not be the best option to play SoI in, it does pretty consistently make Ib to search for Monstrosity. Only downside is that you can find the Extra Deck to be pretty tight when considering what cards to play. I will be making a guide to Summoner of Illusions in Prediction Princess soon so watch out for that.
To make Ib, we are playing Draconnet which can Special Summon a Level 2 or lower Normal Monster from your hand or Deck in Defense Position when it is Normal Summoned. This gets you to a Level 2 Tuner Normal Monster like Guardragon Justicia or Galaxy Serpent to go into Ib (or you can choose to play Crowned by the World Chalice since Ib can treat World Chalice Normal Monsters as Tuners for her Synchro Summon). Full combo is Draconnet and any Runick Quick-Play Spell, let’s say that we had Runick Tip. Normal Draconnet and activate its effect to Special Summon Guardragon Justicia from Deck. Synchro Draconnet and Justicia into Ib the World Chalice Justiciar. Ib activates on Synchro Summon to search for World Legacy Monstrosity from your Deck. Next, activate Tip to Special Summon Sleipnir, the Runick Mane from your Extra Deck. Activate Monstrosity targeting Sleipnir to Special Summon Prediction Princess Bibliomuse and Deus-X Krawler from your Deck. Xyz Deus-X and Sleipnir into Mereologic Aggregator who sends Herald of the Arc Light from Extra Deck to GY on Xyz Summon. Herald then triggers to add Prediction Princess Tarotrei from Deck to hand. Activate Aggregator’s other effect, targeting Herald in GY, and detaching 1 material to attach Herald from GY to itself. Link Aggregator and Ib into I:P Masquerena. Herald triggers again as it is sent to the GY again, which adds Underworld Ritual of Prediction from Deck to hand. Activate Underworld Ritual tributing Bibliomuse to Ritual Summon Tarotrei from hand. Bibliomuse triggers off of being tributed and Special Summons herself back from the GY face-down. Activate Tarotrei to flip Bibliomuse face-up and Bibliomuse’s Flip Effect adds Prediction Princess Tarotreith and another Underworld Ritual from Deck to hand. Activate the second Underworld Ritual, tributing Bibliomuse, to Ritual Summon Tarotreith face-down. During your End Phase, Tarotrei activates to Special Summon back Deus-X Krawler from GY face-down. During your opponent’s Standby Phase, banish Underworld Ritual from your GY to Special Summon a Bibliomuse from your Deck face-down and chain Tarotrei’s effect to flip Tarotreith face-up. On a new chain, Tarotreith’s Flip Effect activates which Special Summons Summoner of Illusions from your Deck face-down. Tarotreith can then flip Bibliomuse, Deus-X, and Summoner of Illusions face-up. Bibliomuse searches for a Prediction Princess monster other than herself and a Ritual Spell from Deck. Deus-X negates all activated monster effects on your opponent’s side of the field while it is face-up after being flipped. Summoner of Illusions’s mandatory Flip Effect then activates, tributing a monster you control (like the spent Tarotreith) to Special Summon Red-Eyes Dark Dragoon from your Extra Deck for an omni-negate. You also have I:P Masquerena which can go into either S:P Little Knight or Borrelguard Dragon. If you want to Special Summon a Fusion Monster with an effect on Special Summon, you can choose not to flip SoI face-up with Tarotreith and instead I:P into Borrelguard to use its effect to flip up SoI to time its effect correctly to benefit from the Fusion Monster’s effect (which we are playing Blazing Bombardment Beast for this).
For the Main Deck Monsters: 3 Prediction Princess Tarotrei, 2 Prediction Princess Tarotreith, and 3 Prediction Princess Bibliomuse. Tarotrei can Quick Effect flip a monster on field face-up or face-down and she can Special Summon a Flip Monster from hand or GY face-down during your End Phase. Tarotreith must either be Ritual Summoned or Special Summoned via Tarotrei's effect in the End Phase. Her Flip Effect Special Summons a Flip Monster from your Deck face-down and she can also Quick Effect flip any number of your monsters face-up or face-down. Bibliomuse can Special Summon herself back face-down after being Tributed and sent there. Her Flip Effect adds a Prediction Princess monster other than herself and a Ritual Spell from Deck to hand and while she is face-up on the field, your Ritual Monsters gain targeting and destruction protection from your opponent’s card effects. 1 Deus-X Krawler which negates all activated monster effects on your opponent's side of the field after it has been flipped face-up and if it is destroyed on field, you can search for a Level 9 monster with a different Type and Attribute. 1 Pot of the Forbidden which has a Flip Effect that lets you choose between Drawing 2 cards, returning all Spell/Traps on the field to the hand, destroying all monsters your opponent controls, or looking at your opponent's hand and shuffling a card from it back into the Deck. 1 Summoner of Illusions whose Flip Effect is a mandatory effect activation when it is flipped face-up which tributes another monster you control to Special Summon a Fusion Monster from your Extra Deck, but that monster is destroyed during the End Phase of this turn. I have spoken enough about SoI, but this Deck provides the perfect skeleton for Runick Prediction Princess, so you can play literally any Flip Monster in place of SoI: Whirlwind Weasel, Guard Dog, Greed Jar, maybe even Rafflesia Seduction or Hade-Hane. 3 Draconnet and 1 Guardragon Justicia which I previously mentioned about.
For Spell/Traps: 3 Underworld Ritual of Prediction which can Ritual Summon a Prediction Princess Ritual Monster from hand or GY face-up or face-down and you can banish it from GY during the Standby Phase to Special Summon a non-Ritual Prediction Princess monster from Deck face-down. 3 Cynet Mining to search for Draconnet. 1 Runick Fountain which allows us to activate Runick Quick-Play Spells from our hand during your opponent’s turn and if you activate a Runick Quick-Play Spell Card, you can target up to 3 Runick Quick-Play Spells in your GY and place them on the bottom of your Deck in any order and draw the same number of cards. While we are just playing the 1 Fountain to search off of Hugin for potentially a couple of draws, you can still legitimately use it to dig for Draconnet or Cynet Mining if you open a lot of Runick Spells with no access to combo. For the Runick Quick-Play Spells: 3 Runick Tip, 3 Runick Flashing Fire, 3 Runick Slumber, 1 Runick Freezing Curses, 1 Runick Destruction, 1 Runick Dispelling, and 1 Runick Smiting Storm. I am not the best person to consult when deciding upon Runick ratios, but this is not a full-on Runick Deck. It is a Deck that plays a whole bunch of Runick cards to basically Instant Fusion out a Level 9 monster to target with Monstrosity. Any other benefit that you receive from the Runick cards is good, but this Deck was not built around maximizing them. Each of them allows you to choose between an effect that is unique to the card and an effect that Special Summons a Runick monster from your Extra Deck to the EMZ, but you are forced to skip your next Battle Phase. Tip searches for a Runick card from Deck before banishing the top card of your opponent’s Deck. Flashing Fire targets and destroys a Special Summoned monster your opponent controls before banishing the top 2 cards of your opponent’s Deck. Slumber targets a face-up monster on the field and prevents it from being destroyed by battle or card effect the next instance it would be this turn, but it cannot attack and then you banish the top 3 cards of your opponent’s Deck. Freezing Curses targets and negate the effects of an Effect Monster your opponent controls until the end of the turn and banishes the top 3 cards of their Deck. Destruction targets and destroys a Spell/Trap your opponent controls and then banishes the top 4 cards of their Deck. Dispelling, if your opponent adds a card(s) from their Deck to their hand, discards a random card out of their hand and then banishes the top 2 cards of their Deck. Smiting Storm banishes cards from the top of your opponent’s Deck up to the number of cards they control. 1 Called by the Grave and 1 Triple Tactics Talent. 2 World Legacy Monstrosity which can either Special Summon a Level 9 monster from your hand or target a Level 9 monster you control to Special Summon 2 Level 9 monsters from your Deck with a different type and Attribute, but with different names. We are still playing 2 because it doesn’t hurt to draw it as we can search another World Legacy card from Deck with Ib’s effect. That card is the 2 copies of World Legacy Pawns we are playing which allows you to target a face-down monster you control and then changes it to face-up Attack or Defense Position. Its other effect is irrelevant in this Deck, but it basically means that you can time your flipping-up of SoI during your opponent’s turn without having to commit to Borrelguard Dragon with I:P Masquerena and instead can go for S:P for more interruption. OR, you can use Pawns to flip up Tarotreith to use its Flip Effects and other monster effects and save Tarotrei’s effect to flip a monster your opponent controls face-down.
Extra Deck: 1 Sleipnir, the Runick Mane as our Level 9 monster to get off of a Runick Quick-Play Spell. You could play 2, but the Extra Deck is a bit tight because of the SoI targets. 1 Hugin, the Runick Wings which adds a Runick Field Spell from your Deck to your hand on Special Summon and if another card(s) you control would be destroyed by card effect, you can banish her from field instead. So in addition to Hugin being able to search for Fountain when necessary, she can also be an SoI target for protection. 1 Red-Eyes Dark Dragoon which I don’t think that I need to elaborate on why it’s a good summon off of SoI, but to sum it up, it’s an omni-negate that cannot be destroyed by SoI’s End Phase destruction clause so it sticks around until your turn. Also, keep in mind that it cannot use its effect to destroy a monster your opponent controls, burning them, and having itself gain ATK. It was not Fusion Summoned, so no Normal Monsters were used for its Fusion Material. No Normal Monster Fusion Material equals no pops. 1 Blazing Bombardment Beast. Can you believe that this card was a vanilla Fusion Monster in the 5D’s Manga that was also a named Fusion component for Blaze Fenix, the Burning Bombardment Bird? Well, its new effect allows it to destroy all monsters your opponent controls with 1900 or less ATK when it is Special Summoned and it if it sent to the GY (doesn’t have to be from field), it can target a monster your opponent controls with 1900 or less ATK, destroy that monster, and inflict damage to your opponent equal to its original ATK. You can also use both effects in the same turn which is kinda nuts considering that you can SoI into this thing and pop all 1900 or less ATK monsters your opponent controls and then I:P it off into S:P for more destruction and interruption. 1 Wind Pegasus @Ignister which is here, not only for an Ultimate Slayer send, but let’s say that you had to go into Hugin to search Fountain to dig into your Deck for Draconnet. After you make Ib and search Monstrosity, you can’t activate another Runick Spell to Summon Sleipnir. Hugin is in the EMZ and the Runick Spells only Summon to the EMZ. You can Synchro Ib (who is a Synchro Tuner) and Hugin into Wind Pegasus to clear the EMZ while also still having the material to make I:P later while also being able to potentially benefit from Wind Pegasus’s GY effect which is when another card(s) you control is destroyed by battle or an opponent’s card effect, you can banish it to target a card your opponent controls and shuffle it into the Deck. 1 Ib the World Chalice Justiciar which searches for a World Legacy card on Synchro Summon. 1 Herald of the Arc Light which adds a Ritual Monster or Ritual Spell from your Deck to your hand if it is sent to the GY. 1 Super Starslayer TY-PHON - Sky Crisis. 2 Mereologic Aggregator. 1 Laevateinn, Generaider Boss of Shadows and 1 Jormungandr, Generaider Boss of Eternity. 1 Borrelguard Dragon which cannot be destroyed by card effects and can Quick Effect target a monster on field and change it to face-up Defense Position whereas this effect’s activation cannot be responded to by your opponent’s cards or effects. Finally, 1 S:P Little Knight and 1 I:P Masquerena. Just as a side note, if we weren’t playing SoI and did not have to play targets for it in our Extra Deck, we could be playing Lib the World Key Blademaster. She can be Link Summoned while we have a World Legacy card in GY (i.e. Monstrosity) and she can set a World Legacy Spell/Trap from our Deck. She can get us World Legacy Awakens which immediately performs a Link Summon when activated. If Lib is used as Link Material and is sent to the GY, she can non-targeting shuffle a card on field into the Deck and pair that with S:P’s effect on Link Summon since she was Link Summoned using a Link Monster as material, you get 2 pieces of removal from that alone. Can’t play it here because of the tight Extra Deck, but it is something you can do in a regular version of this Deck that isn’t playing SoI.
Side Deck: 3 Nibiru, the Primal Being, 3 Mulcharmy Fuwalos, 2 Mulcharmy Purulia, 1 Harpie’s Feather Duster, 3 Ultimate Slayer, and 3 Evenly Matched.