[@LokiLeo789][@Ira] Yeaaaah, I feel like the Seastone would kind of just... stab through the protection of Raijin Mode. Or rather... well, let's just see what the [url=http://onepiece.wikia.com/wiki/Seastone]wiki page[/url] has to say.

[quote]
However, it has been shown that although a Devil Fruit user loses his/her powers when in contact with the Seastone, [b]said powers can still be used on and affect the Seastone,[/b] since Smoker's Seastone-tipped jitte can turn into smoke along with the rest of him. Another example is when Mr. 3's candle wax key could open Seastone cuffs and cell doors, though this may be because the locks themselves are not made of Seastone or because the wax has no Devil Fruit powers inside it, as shown when he unlocked Ace's Seastone handcuffs. Another example is when Shiki levitated battleships in Marineford, despite the hulls being lined with Seastone. Trafalgar Law was also able to switch Seastone chains with regular ones, using his abilities.
[/quote]

...so, it seems to me that activating Super Spark Human has, ironically, reduced Rayne's protection against Seastone compared to his normal state of forcefieldedness, since the Seastone attack wouldn't necessarily have been able to break through the force field without its user having sufficient strength to pierce the force field first. Once it hits your skin, it works immediately. So... nice job breaking it, golden super mode?