Shark Blader

[Tentishark]

[spoiler='Lore']2 Level 3 Fish-Type monsters
When a card or effect is activated that would negate an attack or end your Battle Phase: You can detach 1 Xyz Material from this card; negate the activation, and if you do, destroy that card.[/spoiler]

[Premier Alexander Romanov]

So, wouldn't Utopia just be able to negate that attack as well?
It seems rather weak, and doesn't have all too many applications.
Especially with D-Prison and Mirror Force being things.
Maybe you could make it 1 Xyz Material for the cost, and, since it is Fish-specific, increase the ATK somewhat?

[Daigusto Sphreez]

It needs broader application to be usable. As a type specific card it should be better than most generics and I can't see many situations where this would be. 

 

Maybe it would benefit from having some invulnerability when attacking, idk. 

[Tentishark]

you mean like making the second attack non-negatable?

[Loyalist]

you mean like making the second attack non-negatable?

More like, it cant be targeted by card effects when using the second attack. It would be too situational like that since attack negation cards don't see much play.

[Loyalist]

The card definitely seems more viable than previously. I'd main 1 in my shark deck, even if I don't make it often at least it is 2200 atk through bahumet shark which beats a materialess leviathan dragon.

[Zeppeli Gyro Supreme]

Seems extremely, extremely situational, but like something they would do in the anime.

 

I think the text would be better off along the lines of "...you can detach 1 Xyz Material from this card, and if you do, this card can attack a second time in a row and during that attack your opponent cannot target this card with card effects until the end of the Damage Step."

[Darj]

I think the card's effect is unnecessarily complicated. The opponent simply won't waste an attack-negation card/effect on this so the protection for the second attack is somewhat pointless.

Then, the effect is underwhelming because cards that negate single attacks are rarely used, except Ghostrick Lantern and to a lesser extent Magic Cylinder, and cards that stop multiple monsters from attacking like Negate Attack, Scarecrow, Battle Fader or even Threatening Roar are often preferred, which Shark Blader won't be able to stop.

Finally, as an Xyz with specific materials it think it deserves a better effect.

 

How about improving it with the following effect?

 

"When a card or effect is activated that would negate an attack or end your Battle Phase: You can detach 1 Xyz Material from this card; negate the activation, and if you do, destroy that card."

 

It still punishes attack-negation effects, but now not only it stops stuff like Fader and Scarecrow, but also protects other monsters from having their attacks negated, turning this card into a great tool for finishing the game or for an OTK.