Number C39: Utopia Ray V
Warrior / Light / (3) Rank 5
When this card you control is destroyed by your opponent's card (either by battle or by card effect): You can target 1 Xyz Monster in your Graveyard; shuffle that target into the Extra Deck.
If this card has a "Utopia" monster as an Xyz Material, it gains this effect.
● Once per turn: You can detach 1 Xyz Material from this card, then target 1 monster your opponent controls; destroy it, and if you do, inflict damage to your opponent equal to the destroyed monster's ATK.
Além do Ray V, existe também outro Utopia de Rank 5, que também deve ser invocado da mesma maneira, porém possui caracteristicas diferentes.
Number C39: Utopia Ray Victory
Warrior / Light / (3) RANK 52800/2500
If this card attacks, your opponent cannot activate any Spell/Trap Cards until the end of the Damage Step. If this card has a "Utopia" monster as an Xyz Material, it gains this effect.
● When this card targets an opponent's face-up monster for an attack: You can detach 1 Xyz Material from this card; until the end of the turn, negate the effects of that monster, also this card gains ATK equal to the ATK of the attack target.
Rank-Up-Magic Numeron Force
Normal Spell Card
Target 1 face-up Xyz Monster you control; Special Summon from your Extra Deck, 1 "Number C" monster with
the same Type as that monster you control but
1 Rank higher, by using it as the Xyz Material.
(This Special Summon is treated as an Xyz Summon. Xyz Materials attached to that target also
become Xyz Materials on the Summoned monster.)
Then, negate the effects of all cards currently
face-up on the field, except the Summoned monster.
Só essa combinação de XYZ's e Rank-ups ja fazem um grande estrago ao oponente, porém nao acaba por aqui, e o que ajuda a dar mais consistência ao deck são as Zexal Weapons, que ao meu ver, apenas 3 são utilizáveis, ja que outras são muito especificas ou pouco úteis.