It's actually debatable. I mean the iron sand itself should be weak towards raiton but the magnetic fields that you use to manipulate is neutral.. It's a tricky question..
The 3rd watched as you would deflect the spikes. However it's uncertain if you can still see me since i made spikes emerge infront of you too. It doesn't really matter to me though, it's a valid defense. No matter, the 3rd released his grip of the iron sand and thus let loose of it only to perform another more devastating attack.
The 3rd gathered up a huge amount of raiton chakra and performed a single handseal:
Snake
He then channeled the chakra into his dominant arm(right arm). A spear was formed when the 3rd used shape manipulation over the focused raiton chakra and so he launched it towards you in extremely high speeds. The spear was never shattered into lesser one's but rather a big concentrated one, just so it could deal enough damage to pierce through that shitty armor you cloaked yourself into.
As the spear would hit and kill you, the 3rd would then gather up his katon chakra. He then stomped the ground and channeled the big amount of katon chakra into it. This would cause three pillars of highly concentrated fire to emerge. One of them would emerge right under you. Two others would act as flame walls, one on your left and one on your right(i don't know if i can make the pillars act as walls around you, but i can make them act as walls around me so i don't see why not i mean..). This would trap you sideways and they'd cause the ground around you to get extremely hot. All the pillars would emerge at the same time and the two one surrounding you would be half a meter from you each. The pillars would be several meters tall.
Lastly the third would then gather up his fuuton chakra. He then performed a single handseal and inhaled. He then kneaded a big amount of fuuton chakra and then exhaled several bullets of wind chakra what would scatter in a 180 degree angle from the 3rd. He would aim some towards the fire pillars that would make the ground around explode due to being fueled by the air bullets.
My name is a question that has an answer. u-u.
Jutsus used:
(Raiton: Gian) - Lightning Style: False Darkness
Rank: S
Type: Attack
Range: Short-Long
Chakra cost: 40
Damage Points: 80
Descripton: The user, after performing the Snake hand seal, emits lightning in the shape of a spear from their hands or mouth which then pierces the enemy. Kakuzu, the original user, shoots the technique from his Lightning mask's mouth. Its destructive power is great enough to even pierce through rock; meaning it has a high killing potential. The user can increase the number of spears to attack multiple enemies by branching the main spear. This, coupled with the sheer speed of the lightning, makes it a difficult technique to evade. This strong attack can be defended against by an equally strong attack of the same element such as Raikiri.
( Katon: Gōka Honoo no Hashira Jutsu ) - Fire Release: Great Fire Flame Pillars Technique
Rank: A
Type: Offensive
Range: Short – Mid
Chakra cost: 30
Damage points: 60
Description: The user will knead their fire chakra and release it into the ground by stomping down their leg and then causing three pillars of fire several meters tall spaced out evenly. The Pillars of fire can act as a defensive wall against incoming techniques or targets or used to attack low aerial targets.
(Fūton: Shinkūgyoku) – Wind Release: Vacuum Sphere
Rank: A
Type: Offensive
Range: Short- Mid
Chakra cost: 30
Damage points: 60
Description: After performing the necessary hand seals Rat → Rabbit → Dog, the user takes a deep breath and exhales several small blasts of wind chakra.in such a manner that they are dispersed over an expansive range, enough to make it difficult to avoid them entirely without taking any damage. Due to the properties of this technique, the expelled blasts are capable of piercing into and potentially through an opponent's flesh when they collide, in a similar manner to how bullets function.
Before you ask, yes wind is my one handseal specialty.