CXyz Super Dreadnought Rail Cannon Ultimatum 210

[flowerviolence]

Got inspired when I saw C81 posted, (And subsequently a rank up for sky palace)
 

 
[spoiler=lore] 3 Level 11 Monsters
You can only activate each effect of "CXyz Super Dreadnought Rail Cannon Ultimatum 210" once while this card is on the field. Once per turn, you can detach 1 Xyz material to activate one of these effects:
1: Deal damage to your opponent equal to the amount of cards in their hand x500. This card cannot attack the turn you activate this effect.
2: Deal damage to your opponent equal to the amount of cards on their side of the field x200. [/spoiler]
 
I wanted to keep the effects of this card related to just doing damage. That's what Gustav is known for! So I gave him two ways to do it, one with a possible 3000 damage and the other with a possible 2000 damage. 
 
Let me know what you guys think!

[Wildflame]

For the effort needed to bring it out, this could use some built-in protection.

[flowerviolence]

I have no problem getting out Gustav, and then you just need a Rank-Up-Magic card. Though I was thinking with three materials I might add a Detach 1 and prevent it from being destroyed.