Ultimate Dragon King - Death Rex

[Zeppeli Gyro Supreme]

Sadly, trying to work out how the cards fit with their different Attribute and card type didn't work out the best based on the series they're from, but oh well.

Dragon King's Head - Death Rex
Fire/Dragon/9/3000/1500
Must first be Special Summoned by banishing 2 level 5 or higher monsters you control. Once per turn, you may send 1 card from your hand to the Graveyard to banish 1 card on the field. If that card was an Effect Monster, this card gains that monster's effect until the End Phase of your next turn.

Dragon King's Stomach - Large Rex
Earth/Dragon/8/1500/3000
Must first be Special Summoned (from your hand) in face-up Attack Position by returning 3 cards you control to the Deck. Once per turn, if this card would be destroyed, it is not, and its ATK and DEF are increased by 300. A monster this card battles with is equipped to this card as an Equip Spell Card after the 2nd End Phase after the battle.

Dragon King's Tail - Skeleton Rex
Water/Dragon/Ritual/6/0/0
[Ritual Summon effect using "Dragon King's Gathering".]. When this card is Ritual Summoned, draw 1 card. When this card is destroyed and sent to the Graveyard, you may add 1 of your Level 9 or lower Dragon-Type monster from the Deck, Graveyard, or that is banished to your hand.

Dragon King's Arm - Maximum Rex
Light/Dragon/Synchro/9/4000/500
1 Dragon-Type Tuner + 1 or more non-Tuner Dragon- or Warrior-Type Monsters
The Synchro Material Monsters used for this card's Summon are banished instead of being sent to the Graveyard. This card cannot be destroyed during the Battle Phase. Once per turn, during your Main Phase 1, you may select 1 monster you control; That monster can attack twice during this turn's Battle Phase, but battle damage inflicted to your opponent by that monster this turn becomes 0.

Dragon King's Wing - Shadow Rex
Dark/Dragon/Xyz/Rank 7/2250/2250
2 Level 7 Monsters
Once per turn you may change all monsters you control to face-down Attack Position. Once per turn, if a Dragon-Type monster was used as an Xyz Material for this card's Xyz Summon, you may detach 1 Xyz Material from this card and send a number of cards you control to the Graveyard; Banish an equal number of cards your opponent controls.

Ultimate Dragon King - Death Rex
Divine/Dragon/Fusion/12/8500/8500
A Fusion Summon of this card can only be conducted by sending 3 "Dragon King's" monsters you control to the Graveyard (you do not use "Polymerization".) When this card is Fusion Summoned, send all cards in both player's hands to the Graveyard, and all face-up Spell and Trap Cards on the field are flipped face-down. When this card is targeted by a card effect or would be destroyed, send the top 2 cards of your Deck to the Graveyard and negate the effect or attack that would destroy or target this card.