Number 37: Ultimate Guardian plus Chaos and Rank Up versions

[thanonyx]

 

[spoiler=lore]

3 Level 8 LIGHT monsters

Once per turn, during either player's turn: You can detach 1 Xyz Material from this card, then target 1 card you control, except this card; while this card is face-up on the field, either that card(s) cannot be destroyed by battle or by card effects (your choice). A card that has been targeted by this card's effects cannot be targeted by it again as long as it is face-up on the field.

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[spoiler=lore]

4 Level 8 LIGHT monsters

You can also Xyz Summon this card by using a "Number 37: Ultimate Guardian" you control as the Xyz Material. (Xyz Materials attached to that monster also become Xyz Materials on this card.) During either player's turn, if your Life Points are 1000 or less: Detach all Xyz Materials from this card; all other monsters you currently control cannot be destroyed by battle and all Spell and Trap cards you currently control cannot be destroyed by card effects as long as this card remains face-up on the field.

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[spoiler=lore]

4 Level 9 LIGHT monsters

When this card is Special Summoned: All other cards you currently control cannot be destroyed as long as this card remains face-up on the field. If this card has an "Ultimate Guardian" monster as an Xyz Material, it gains this effect.

● Once per turn: You can detach 1 Xyz Material from this card, then increase this card's ATK by the ATK of the Xyz Material you detached to activate this effect until the End Phase. When a Spell, Trap, Spell/Trap effect, or Effect Monster's effect is activated that destroys a card(s) on the field: You can detach all Xyz Materials attached to this card; negate the activation and destroy it.

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I have had these card bouncing around in my head for quite a while so please let me know what you think. I'm also thinking of making a Number 36 line of Xyz Monsters that look like demons to be these cards' anti-theses.