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Name: Magical art: Lava style: Sea of devastation
Class: 4
Type: Mana
Sub-Type: Offensive
Specialties: Elemental: 125
Availability: Open
Requirements: Lava element
Description: By slamming their foot on the ground, the user cracks the ground open in front of them. Once the ground is open, lava bubbles up from the cracks, and spreads over the battlefield like a thin sheet. The lava makes standing on the ground impossible for anybody that doesn't have the lava element. As such, the lava will burn the users opponent and not the user unless it is dealt with by another technique. This technique is also the opening of many Lava techniques.
Training: 250 words
Cost: 30 mana

This needs to state exactly how much area it covers, at least in the form of a radius. It also should not be Class 4, regardless. You're covering an area in lava. Class 3. Maybe higher depending on what you make the area. Also include how hot the lava is. What kind of burns would one suffer if it touched their skin?

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Name: Lava style: lance raid
Class: 2
Type: Mana
Sub-Type: Offensive
Specialties: Elemental: 125
Availability: Open
Requirements: Lava element
Training: 600 words
Description:The user collects all of the lava from sea of devastation into a ball above their head, before molding it into a lance. They can then launch this lance at the same speed as their own speed stat. This attack uses all of the lava from Sea of devastation, making it so it can only be used once
Cost: 100 mana

I know this will probably sound stupid but you're creating and using a lance. This would make one of the required specialties Swordsmanship. Also, it would not use your speed stat as your speed stat is physical. If anything, it would use your Control stat to determine the speed of the lance. Describe the approximate size of the lance.

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Name: Lightning-rod: Static charge
Class: 5
Type: Mana
Sub-Type: Supplementary
Specialties: Elemental: 25
Availability: Open
Requirements: Lightning element
Description: By forcing their mana outwards, the user charges the air around them, with the range being a quarter of their maximum mana in meters. This technique does nothing to harm the opponent. It does however, reduce the cost of any lightning techniques by 25% and automatically charge any water techniques
Training: 125
Cost: 20 mana

Decrease 25%. Make it 10%. A class 5 technique should not cut a quarter of your lightning technique cost while also electrifying any water techniques. Also keep in mind that the electrified water will not do anything beyond buzzing your opponent or anyone else who touches it, considering it's only a class 5 by-product.

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Name: Lightning-rod: Kaiju hunt
Class: 1
Type: Mana
Sub-Type: Offensive
Specialties: Elemental: 125
Availability: Closed
Requirements: Lightning element
Wind element
Tactical weaponry: 50
Swordsmanship: 100
Description: Ara's strongest technique, one that he created himself. This is a two part technique, requiring the use of static charge to use. Using a burst of wind magic, Ara launches himself into the clouds. Once sky-borne, Ara releases a far stronger static charge, charging the clouds. Once the clouds are charged he spins his blade on it's chain, drawing natural lightning towards himself. The collected lightning forms a giant dragon-like appearance around Ara, who then, using another pulse of wind magic, launches himself and the lightning construct towards the ground and his opponent. The lightning dragon then explodes outwardly on impact with the ground or the opponent, dealing massive damage and paralyzing anything caught in the blast. After the technique, Ara is left unable to move in the epicenter for 1 post, due to paralysis in his legs. He can still block incoming attacks, but he cannot move nor attack himself due to the strain on his mana
Appearance:


Training: 1200
Cost: 200 mana, 100 stamina, unable to attack for 1 post

How many posts is the target paralyzed after being struck by this technique? You only put that they are paralyzed. This could be one post, this could be half a post, this could be anything. Please state clearly the blast radius as well.