ITT: ZeXal becomes more like Starforce.

[Toffee.]

Probably a dumb idea, but ehh....

Daigusto Diamond Emeral
WIND / Rank 4
[Rock/Xyz/Effect]
You cannot Xyz Summon this card during the turn you Xyz Summoned a "Daigusto Emeral". You can only Xyz Summon this card by using a "Daigusto Emeral" you control, with no Xyz Materials, as the Xyz Material. Once per turn you can detach 1 Xyz Material from this card to Target 1 non-Effect monster OR Xyz monster in your Graveyard: Special Summon the Target. The Summoned monster gains 1000 ATK, and If the Summoned monster is an Xyz monster, it's effect(s) are negated. If this card destroys an Opponent's monster as a result of battle, you can Target 1 monster in your Graveyard: Return it to the bottom of your Deck, and Draw 1 card.
ATK / 2300 DEF / 1300

Number 39: Heart Utopia
LIGHT / Rank 4
[Warrior/Xyz/Effect]
You cannot Xyz Summon this card during the turn you Xyz Summoned a "Number 39: Utopia". You can only Xyz Summon this card by using a "Number 39: Utopia" you control, with no Xyz Materials, as the Xyz Material. While this card has Xyz Materials, the Opponent cannot declare an attack. Once per turn, You can detach 1 Xyz Material from this card: This card gains 1000 ATK until the End Phase. While this card has no Xyz Materials, it cannot declare a direct attack, and must declare an attack each turn(if able). Destroy this card during the End Phase of a turn in which it did not declare an attack.
ATK / 3000 DEF / 2500

Superdreadnought Rail Club Cannon Gustav Max
EARTH / Rank 10
[Machine/Xyz/Effect]
You cannot Xyz Summon this card during the turn you Xyz Summoned a "Superdreadnought Rail Cannon Gustav Max". You can only Xyz Summon this card by using a "Superdreadnought Rail Cannon Gustav Max" you control, with no Xyz Materials, as the Xyz Material. If this card destroys an Opponent's monster as a result of battle, You can detach 1 Xyz Material from this card: Inflict 4000 damage to your Opponent.
ATK / 3500 DEF / 3500

Evilswarm Spade Ouroboros
DARK / Rank 4
[Dragon/Xyz/Effect]
You cannot Xyz Summon this card during the turn you Xyz Summoned a "Evilswarm Ouroboros". You can only Xyz Summon this card by using a "Evilswarm Ouroboros" you control, with no Xyz Materials, as the Xyz Material. Once per turn, you can Detach 1 Xyz Material from this card: Your Opponent sends 1 card from their Hand and side of the field to the Graveyard. Then, you can Banish 1 card in the Opponent's Graveyard.
ATK / 3250 DEF / 2450

[Bringerofcake]

I actually REALLY like this concept. It's what Ranking Up should be, rather than this Spell Card nonsense. However, Gustaph feels too OTK-y for me. You can detach on Summon for 2000, next turn detach for 2000, change into Club and finish for 4000.

[Toffee.]

To be fair, Gustaph's concept IS a walking OTK. I mean, 2000 damage on a 3000 ATK body is pretty crazy right off the bat.
Although, Gustaph was sort of a last-minute addition, just to say it's a full set. That, or Anna suddenly being evil for a day would make for an amusing plot.
Regardless, I could always change it if you wanted.

....Also, I like the Rank-Up concept.
(Despite the fact these are just weird versions of Chaos Numbers)

[Bringerofcake]

All you'd need to say if you wanted to stop that from happening (OTK-centered as Gustaph is, 6000 damage in one turn is worse than DSF) just say that it can't activate its effects in the same turn that it's Xyz Summoned.

[Toffee.]

Added a line that requires it to actually move, and destroy something by battle.
Then it can hit for 4000.
Figured I could slow it down a bit.