Premier Alexander Romanov

Zombie World Spell/Field All monsters in each player's hand, on the field, and in the GYs become Zombie monsters. During their Main Phase, the turn player can Normal Summon 1 Zombie-Type monster in addition to their Normal Summon or Set. (They can only gain this effect once per turn.) Next: Let's go with a spooky blast from the past. Giant Axe Mummy.

Crimson Knight Vampire Bram DARK/Zombie/Xyz/Effect/Rank 5/2500 ATK/2500 DEF 2+ Level 5 monsters, including a "Vampire" monster If you use a monster(s), with a Level, that is owned by your opponent for the Xyz Summon of this card, treat it as Level 5. You can only use each of the following effects of "Crimson Knight Vampire Bram" once per turn. You can detach 1 material from this card, then target 1 monster in either GY; Special Summon that target to your field, but only that monster can attack or activate its effects for the rest of this turn. If this card is destroyed by battle or card effect: You can activate this effect; Special Summon 1 "Vampire" monster from your GY during the Standby Phase of the next turn. Next: Let's keep with the spooky theme and give some more love to the children of the night: Vampire Baby.

Evil Eye Defeat Trap/Normal If you control an "Evil Eye" monster: You can pay 1000 LP; shuffle 1 card your opponent controls into their Deck, or, if you have "Evil Eye of Selene" on the field, shuffle up to 2 cards your opponent controls into their Deck instead. You can only activate 1 "Evil Eye Defeat" per turn. Next: Thunder Dragon Thunderstormech

Royal Queen of the Labrynth Castle DARK/Fiend/Xyz/Effect/Rank 8/2900 ATK/2900 DEF 2 Level 8 Fiend monsters While this card has a Level 8 "Labrynth" monster as material, it is unaffected by your opponent's activated effects. You can only use each of the following effects of "Royal Queen of the Labrynth Castle" once per turn. (Quick Effect): You can detach 1 material from this card; reveal 3 Normal Traps from your Deck, your opponent chooses 1 for you to Set to your side of the field, and you shuffle the rest back into your Deck, also if it is a "Welcome Labrynth" Trap Card, it can be activated this turn. If another monster(s) leaves the field by your Normal Trap effect (except during the Damage Step): You can attach 1 card on the field or in either player's GY to this card as material. Next: All of the existing Xyz Pendulums we have belong to an archetype related to the ARC-V anime. Make one that is either totally original with generic materials, or belongs to an archetype that has nothing to do with ARC-V.

Hot Red Dragon Archfiend DARK/Dragon/Synchro/Effect/Level 8/3000 ATK/2500 DEF 1 Tuner + 1+ non-Tuner monsters This card's name becomes "Red Dragon Archfiend" while it is on the field or in the GY. Once per turn, during your Main Phase 1: You can destroy all other face-up Attack Position monsters on the field. Other monsters cannot attack the turn you activate this effect. Next: Divine Dragon Titanomakhia

Well, I shall take the immortal advice of a little girl from a city in Texas: "¿Por qué no los dos?" Number CXX: Utopic Despair Infinityrant DARK/Warrior/Xyz/Effect/Rank 11/4500 ATK/4500 DEF 3+ Level 11 DARK monsters During the End Phase, if a monster(s) was banished or sent to the GY this turn: You can detach 1 material from this card; Special Summon 1 of those monsters to your side of the field. (Quick Effect): You can target 1 Special Summoned monster on the field; halve its ATK, and if you do, gain LP equal to the lost ATK. You can only use each of these effects of "Number CXX: Utopic Despair Infinityrant" once per turn. If this card has a "Utopia" or "Utopic" Xyz Monster as material, it gains this effect. ● Unaffected by your opponent's activated effects. Next: We got Exorsister Magnifica as the pairing of Caspitell and Mikailis. Now make another Rank 8 Exorsister that is made from Gibrine and Asophiel.

Chain Resonator LIGHT/Fiend/Tuner/Effect/Level 1/100 ATK/100 DEF When this card is Normal or Special Summoned while a Synchro Monster is on the field: You can Special Summon 1 "Resonator" monster from your Deck. You can only use this effect of "Chain Resonator" once per turn. Next: Mereologic Aggregator

Gilford the Legend EARTH/Warrior/Effect/Level 8/2600 ATK/2000 DEF To Tribute Summon this card face-up, you can Tribute Equip Card(s) you control, as well as monsters. Cards equipped to Warrior monsters you control cannot be targeted or destroyed by your opponent's card effects. When this card is Normal or Special Summoned: You can equip as many Equip Spell Cards from your GY as possible to any Warrior monster(s) you control. You can only use this effect of "Gilford the Legend" once per turn. Next: Since we're talking about bad boss monsters, let's go with Meklord Emperor Skiel, the weakest of the three Meklord Emperors.

Chimeratech Fortress Dragon 1 "Cyber Dragon" monster + 1+ Machine monsters Cannot be used as Fusion Material. Must first be Special Summoned (from your Extra Deck) by sending the above cards from either field to the GY. (You do not use "Polymerization".) The original ATK of this card becomes 1000 x the number of Fusion Materials used for its Special Summon. Monsters your opponent controls cannot attack, except to attack "Chimeratech Fortress Dragon". Notes: ...Not really sure what the intent of this was. I figured just expanding it to any Cyber Dragon would work. Also, gave it something defensive to make it a proper "Fortress". Next: We've tackled Vendreads a few times here. Let's go to the Vendread origin (pun intended). Someone remake Revendread Slayer.

Number C0: Battleship Righteous Alpha Nafil Knight WATER/Aqua/Xyz/Effect/Rank 0/0 ATK/0 DEF 2+ "Number C" and/or "CXyz" monsters (This card's original Rank is always treated as Rank 1.) While you control another Xyz Monster, monsters cannot target this card for attacks, also neither player can target it with card effects. You can only use each of the following effects of "Number C0: Battleship Righteous Alpha Nafil Knight" once per turn. At the start the Damage Step, if this card battles an opponent's monster: You can attach that opponent's monster to this card as material, then inflict damage to your opponent equal to its original ATK. (Quick Effect): You can detach 1 material from this card, then target 1 monster on the field; apply this effect, depending on who controls the target. ● Your monster: Special Summon 1 "Number C" or "CXyz" Xyz Monster from your Extra Deck, using the target as material. ● Your opponent's monster: Take control of the target, then Special Summon 1 "Number" Xyz Monster from your Extra Deck, using the target as material. (This is treated as an Xyz Summon. Transfer any materials from the target to the Special Summoned monster.) Next: I feel like AA-ZEUS is all alone. Create another Divine Arsenal Xyz with a different alternate Xyz Summon condition requiring an Xyz Monster to do something.

Number C56: Adamantine Rat LIGHT/Beast/Xyz/Effect/Rank 2/600 ATK/700 DEF 4 Level 2 monsters This card is unaffected by your opponent's card effects. Cannot be Tributed or destroyed by battle. Control of this card cannot be switched. If this card has "Number 56: Gold Rat" as an material, it gains this effect. ● You can detach 1 material from this card; shuffle all other cards from your hand, field, GY, and that are banished into your Deck, then add 5 cards from your Deck to your hand, but during your next End Phase, you lose the Duel. Next: With the Xyz Festival of Master Duel going on, so many Fusions, Synchros, and Links got excluded. Let's make that up to some of them, shall we? Make an Xyz Monster for an archetype or deck that doesn't have any.

Jinzo - Lord DARK/Machine/Fusion/Effect/Level 8/2600 ATK/1600 DEF "Jinzo" + 1 DARK Machine monster Your opponent cannot activate Trap Cards, or their effects on the field. Negate all Trap effects your opponent controls. During your Main Phase: You can inflict 300 damage to your opponent for each Spell/Trap Card on the field. You can only use this effect of "Jinzo - Lord" once per turn. Notes: Why this wasn't a Fusion in a deck used by a man who was rivals to a strategy all about Fusions, I will never know. Next: You know, the Jinzo support could use a little tweaking. Jinzo - Returner.

Odd-Eyes Pendulumgraph Dragon LIGHT/Dragon/Ritual/Pendulum/Effect/Level 7/2700 ATK/2500 DEF 4 <-> 4 Pendulum Effect: During the End Phase: You can add 1 Ritual Spell from your Deck or GY to your hand, then return this card to the hand. You can only use this effect of "Odd-Eyes Pendulumgraph Dragon" once per turn. Monster Effect: You can Ritual Summon this card with "Odd-Eyes Advent". Each time your opponent Special Summons a monster(s) from the Extra Deck, inflict 300 damage to them. Once per turn, when your opponent activates a Spell Card or effect (Quick Effect): You can place this card in your Pendulum Zone, and if you do, negate that effect, then, if this Ritual Summoned card was placed in the Pendulum Zone this way, you can Special Summon 1 "Odd-Eyes" monster from your Extra Deck. Notes: Removed the summoning restriction. Don't really see what the problem was with the card other than that. Next: Sanwitch. I'm honestly surprised we hadn't gotten around to this one yet.

Lord-Commander of Dark Magic DARK/Spellcaster/Xyz/Effect/Rank 8/3200 ATK/2800 DEF 2 Level 8 Fusion Monsters This card's name becomes "Dark Magician" while on the field or in the GY. If your opponent activates a card or effect (Quick Effect): You can detach 1 material from this card; negate that effect, and if you do, Special Summon 1 Level 8 or lower Spellcaster monster from your GY. You can only use this effect of "Lord-Commander of Dark Magic" once per turn. Next: Here's an oldie but a goldie. Make a Number C evolution for a Number that did not appear in the anime.