Remember when you used to overlay 2 Frightfur Cruel Whale into VFD? Well, now you can use those Level 9 Cruel Whales for something else: as a target for World Legacy Monstrosity and as material for Mereologic Aggregator. This isn't so much of a "Fluffal" Deck. It more aims to utilize the Fluffal and Frightfur cards to Deckthin and draw cards using Toy Vendor and Fluffal Wings then allowing you to make Frightfur Cruel Whale, giving you access to a 9. Then, if you have Herald of the Arclight for Trias Hierarchia for another 9 or have World Legacy Monstrosity, you can go into the Rank 9 Aggregator to send Herald, search a Ritual, reattach it, Link it off, and search a Ritual again. You are not ending on any notable means of actual Fluffal/Frightfur cards or any of their specific interruptions for your opponent's turn. The Fluffal cards are being used as an engine to deckthin and draw as well as get a Level 9 on field to be absolutely clear.
Main Deck: Starting with the Fluffals and Edge Imps, 3 Fluffal Bear, 3 Edge Imp Chain, 1 Edge Imp Sabres, 1 Edge Imp Scythe, 1 Fluffal Owl, and 1 Fluffal Wings. Bear sends itself form hand to grave to set a Toy Vendor from Deck. Toy Vendor is extremely important for drawing and deckthinning in this Deck, so having more ways to access it is always good. Chain adds a Frightfur card from Deck when its sent from hand or field to grave. This can get you something like Frightfur Patchwork in order to further deckthin and give you access to more cards to start/further extend your plays. Or, it can search you Frightfur Fusion which is a good way to help you extend your plays in this Deck rather than for banishing a gazillion monsters to make a Frightfur Wolf that contests God himself and OTK your opponent into the sun. Notably, we are not playing Frightfur Repair to search off of Chain (or send off of Cruel Whale) because we are playing an extremely small amount of Fluffals, most of which are going to be banished out of the grave for Wings, therefore removing them from rotation. Sabres is another Edge Imp name, and in the case where you run out of Fluffals to search off of Toy Vendor, you also have the option to search Sabres from Deck. We aren't playing any notable Fusions that actually require it as material like Wolf, but it is better to have the 1 to search in case and to have another name in Deck. Edge Imp Scythe is not actually here to specifically Fusion on your opponent's turn for Cruel Whale for a pop. It is another name that you can search off of something like Patchwork, giving you more Edge Imps in rotation for Fusion plays on your turn. If you really wanted to, you could use it on your turn 0 to Fusion Cruel Whale for a pop when your opponent is the one going first as it gives you a Level 9 on field since you can banish it from grave to protect said Cruel Whale from destruction. Owl can be Summoned off of Diviner. This is just another way to Fuse to get to Cruel Whale, given you didn't draw Poly or Patchwork. There are some cases where you just don't Normal Summon in the Deck as a result of not drawing Diviner and having this in hand to Normal gives you Poly for Cruel Whale in a Level 9 or the Poly can be saved for next turn to make a Guardian Chimera that is untargetable and can pop and draw cards to help clear the board and gain resources. Wings is also Summonable off of Diviner and is usually the more optimal Summon target on a turn that you already have Cruel Whale or have a way to Fuse into it. It can banish itself from grave if you have Toy Vendor on field and banish another Fluffal from grave to draw a card and send said Toy Vendor to grave to draw another card. This would then trigger the Toy Vendor for a Fluffal or Edge Imp Sabres search which is not once per turn. If you are wondering why we are not playing some of the other Fluffal monsters, it's because we only have 5 Fluffal names in Deck that are absolutely necessary for this engine to work. The others focus a lot heavier on interacting with Fluffals in hand or ones in grave. We don't need them as they would just end up as bricks for the most part as they aren't exactly what we need for deckthinning and drawing to the best of our ability. For the other monsters, 1 Prediction Princess Tarotreith, 3 Prediction Princess Tarotrei, 3 Prediction Princess Bibliomuse, 2 Deus X-Krawler, 1 Trias Hierarchia, and 3 Diviner of the Herald. Tarotreith can be Ritual Summoned or Summoned with Tarotrei and it Summons a Flip from Deck face-down when its flipped and it is Quick Effect to flip any number of your monsters face-up or face-down. Surprisingly, sometimes you end on 6 monsters on board, which means that if you wanted to use Tarotreith to summon a Flip from Deck, you'd have to Masquerena off a monster or two first. But that is all in the name of gameplay for the most part which is what we want. Tarotrei Summons a Flip from hand or grave face-down during your End Phase and it is a Quick Effect to flip a monster on field face-up or face-down. Bilbiomuse adds a Prediction Princess and a Ritual Spell from Deck on flip, it Summons itself back face-down when its tributed (which also happens to work with Hierarchia which is optimal in some situations to keep resources on board for more plays), and it makes all of your Rituals untargetable and indestructible by your opponent's effects. Deus X-Krawler negates all activated effects of your opponent's monsters on the field. It's the only realisitc Flip to Summon off of Tarotreith, but its all in good favor as you are ending on more than just Tarotreith and Tarotrei in this Deck. Hierarchia can Tribute a Fairy to Summon itself from hand or grave, giving you a Level 9 on field. If you Tribute Diviner, it triggers to Summon a Level 2 or lower Fairy from hand or Deck. If you Tribute Bibliomuse, it can Summon itself back face-down. Diviner can send a Fairy from Deck or Extra Deck to grave on Summon. Usually, you'd send Hierarchia to Tribute Diviner to Summon it. However, if you draw the Hierarchia, you can just send Arc Light from Extra and Tribute Diviner to Summon Hierarchia from hand.
For Spell/Traps: 3 Underworld Ritual of Prediction. This Rituals a Prediction Princess from hand or grave face-up or face-down and you can banish it from grave during the Standby Phase to get Bibliomuse from Deck face-down. 3 Toy Vendor which allows you to discard a card and draw a card. If that card is a Fluffal, you can Special Summon any monster from hand. If it's not, you discard it, an effect that is not a hard opt. If it's sent to grave, you can add a Fluffal or an Edge Imp Sabres from Deck which is not opt. This card is great for deckthinning and drawing, especially with Wings. 1 Frightfur Fusion which allows you to Fusion Summon a Frightfur by banishing monsters from field or grave. This usually gets you Frightfur Sabre-Tooth by using a Frightfur Fusion Monster you send from Extra Deck to grave with Cruel Whale and any other Fluffal or Edge Imp. Sabre-Tooth then Summons a Frightfur from grave, getting you back a Cruel Whale for a Level 9 on field. 3 Frightfur Patchwork which adds an Edge Imp and a Polymerization from Deck to hand which is excellent for getting resouces and deckthinning. The aforementioned 2 Polymerization, 3 World Legacy Monstrosity, and 3 Foolish Burial Goods to send Toy Vendor.
Extra Deck: 1 Guardian Chimera which can be made on turn 3 for pops and draws with a Poly that you drew previously or searched during your previous turn. Coincidentally, it's also Level 9 meaning that you can also further go into Rank 9 or Prediction Princess plays afterwards if you wanted to. 2 Frightfur Cruel Whale which pops a card on both fields on Fusion Summon, and it can send a Frightfur card from Deck or Extra Deck to have a Fusion you control gain ATK equal to half its original ATK until the end of the turn. The send is usually a Frightfur Fusion Monster from your Extra Deck to get material in grave for Frightfur Fusion to make Sabre-Tooth. Also, it's a Level 9 whose Type and Attribute are good for World Legacy Monstrosity. 1 Frightfur Sabre-Tooth which Special Summons a Frightfur from grave on Fusion Summon. This gives you a Level 9 for Rank 9 plays and Sabre-Tooth itself is material for a Link Summon. 1 Frightfur Tiger. This is the card you'll be sending from Extra with Cruel Whale. It realistically can be any Frightfur Fusion Monster, but I just felt like in a wierd situation, this card would be the best Fusion to have in Extra just in case. 2 Herald of the Arc Light for Ritual searches. 3 Mereologic Aggregator which sends Herald from Extra for a Ritual search and can reattach it from grave, giving you another Ritual search if you Link Aggregator off. 1 Jormungandr, Generaider Boss of Eternity and 1 Laevateinn, Generaider Boss of Shadows. Frequently, you have enough resources and material on board during your standard combo to go into both Aggregator to send Herald and another Rank 9. Laevateinn is a great form of interruption on your opponent's turn which can also deal with certain matchups that Deus X cannot deal with like backrow Decks. I think you could play another Rank 9 in something like Phantom Fortress Enterblathnir or Sacred Tree Beast, Hyperyton in situations where you have more resources on board for another Rank 9. 1 Knightmare Unicorn, 1 S:P Little Night, 1 I:P Masquerena which you frequently are able to go into to both Link off Aggregator and have an interruption on your opponent's turn, and 1 Linkuriboh to get Wings into grave from field in certain situations.
Side Deck: 3 Nibiru, the Primal Being, 2 Cosmic Cyclone, 1 Harpie's Feather Duster, 3 Infinite Impermanence, 3 Evenly Matched, and 3 Solemn Judgment.