Here's KiaiJutsu 2.0
The kiai is a focusing of the will, that usually projects into the world with a vocalization. Because of that it could use the same cooldown as the Thu’um, but have it them be much shorter, and probably the same across the board. You should be able to use them many times in a longer battle. A single use, should be able to change the flow of a duel, but only the repeated usage should really turn the tide of a larger battle. (Note: I use “x” to denote the numbers since I feel that needs research, and should probably come later. I have added multiples to give some general theory on balance. I’ll probably be revising the names themselves for a while. I’d make the cooldown pretty standard until you get to the Battle chants. Since the Thu’um is usually from 30-100 seconds, perhaps looking at 10 seconds would be a good starting point. For the sound, we only learned a handful of kiai’s in my martial arts, but you could modulate how they were said. They could be sharp and sudden, or drawn out, rising or falling. This could be a little something that differentiates them from the Thu’um.)
Tier 1 The Student
You learn the basics of kiai. You focus your will for a moment, and strike out with your voice, momentarily enhancing your abilities. (Notes: These should be balanced to cancel each other out.)
Fire Kiai: Increase HtH dmg by x and One and Two Handed Skill by x, for x seconds
Raging Fire Kiai: Increase HtH dmg by 2x and One and Two Handed Skill by 2x, for x seconds
Raging Fire Immolation Kiai: Increase HtH dmg by 4x and One and Two Handed Skill by 4x, for x seconds
Alternate: Battle Chant: Increase HtH dmg by 2x and One and Two Handed by 2x for 8x seconds
Tier 2 The Adept
As you learn the kiai, you find yourself able to mold it, and create more specific effects.
Body Kiai: Increase Stamina by x decrease Stamina regen by 2x for x seconds
Three-fold Body Kiai: Increase Stamina by 2x, decrease Stamina regen by 3x for x seconds
Focused Kiai: Increase Magicka by x decrease Magicka regen by 2x for x seconds
Focused Mind Kiai: Increase Magicka by 2x decrease Magicka regen by 3x for x seconds
Mountain Kiai: Increase Armor Skill by x for x seconds, and Magick Resistance by x for x seconds (Note: This could be switched to blocking if this doesn’t give the right feel.)
Immovable Mountain Kiai: Increase Armor Skill by 2x for x seconds, and Magick Resistance by 2x for x seconds
Immovable Jade Mountain Kiai: Damage Immunity for 2x seconds
Alternate: Battle Chant: Increase Armor Skill by x for 8x seconds
Wind Kiai: Increase Movement speed by x for 2x seconds
Swift Wind Kiai: Increase Movement speed by 2x for 2x seconds
Swift Wind Storm Kiai: Increase Movement speed by 4x for 2x seconds
Alternate: Battle Chant: Increase Movement speed by x for 8x seconds
(Notes: I used snake names paired with flowers, often in Japanese. We could change the names. I’ve often noted the English name as well as the meaning of the flowers in the language of flower.)
Adder Kiai: Staggers x
Sakura Adder Kiai: Paralyzes x
Viper Kiai: Decrease Heavy Armor, Light Armor and Block by ½ x for x seconds
(Notes: As you see, Mountain Kiai is set up to win this encounter. This is a fundamentally a psychological attack made to shock your opponent, if they are focused too and of similar skill it will break across them like waves on the rocks.)
Foxglove Viper Kiai: Decrease Heavy Armor, Light Armor and Block by x for x seconds
Krait Kiai: Decrease One handed, Two handed by ½ x for x seconds (Notes: Similar to Kiai this is psychological, and should lose in competition with Fire Kiai.)
Nightshade Krait Kiai: Decrease One handed, Two handed by x for 2x seconds
Mamushi Kiai: Slows by x for x seconds
Violet Mamushi Kiai: Slows by x for x seconds
(Notes: Violet or sumire means “small love”, “sincerity”, or “small bliss”.)
Anaconda Kiai: Damage Stamina by x and increase Stamina regen by x for x seconds
Chrysanthemum Anaconda Kiai: Damage Stamina by 2x and increase Stamina regen by x for x seconds
(Notes: Chrysanthemum or Kiku means “noble”, “purity” and “trust me”.)
Cobra Kiai: Damage Magicka by x and increase magicka regen by x for x seconds
Peony Cobra Kiai: Damage Magicka by 2x and increase magicka regen by x for x seconds
Mamba Kiai: Fear effect on lvl -x
Lotus Mamba Kiai: Fear effect on lvl -2x
Option: Silent Kiai
(Note: If used this should be a tangential quest line to the main kiai quest. The idea is that the need to make the noise falls away, and now you make it internally, allowing you the advantages without projecting your power. “Whether a thought is spoken or not it is a real thing and it has power," Tuek said. "You might find the line between life and death among the Fremen to be too sharp and quick.” ― Frank Herbert, Dune)
Silent Kiai: Increase HtH dmg, Bow and One Hand Skill by x, for x seconds
Silent Thunder Kiai: Increase HtH dmg, Bow and One Hand Skill by 2x, for 2x seconds
Mist Kiai: Increase Light Armor by x and movement speed by x, for 2x seconds
Hidden Mist Kiai: Increase Light Armor by 2x and movement speed by 2x, for 2x seconds
Tier 3: The Master
At this level you have mastered the kiai. You can use it to attack and defend at the same time, you can imbue your fists with your indomitable will, and you can use it to move quickly.
Iron Kiai: Increase hand to hand 3x and Armor by x, for x seconds
Immortal Iron Kiai: Increase hand to hand 6x and Armor by 2x, for x seconds
Taipan Kiai: Damage stamina and magicka by 2x
Asago Taipan Kiai: Damage stamina and magicka by 2x
(Notes: Asago, or Morning Glory means “brief love” or “bond of love”.)
Option: Silent Kiai Tier 2
Shadow Kiai: Increase Movement speed by x for 4x seconds
Shadow Stepping Kiai: Increase Movement speed by 2x for 4x seconds
You begin to understand the deeper ways of the kiai. You find that you can stretch the effects out using chants learned from an old monk to turn the kiai inwards and maintain that focusing of will for an entire fight. (These should have a much longer cooldown and duration. Both should be enough for a significant, if not long, battle. There should be a real question of using the chants, the Thu’um or kiai for a duel with a skilled man, mer, or beast-man opponent. The chants should provide a long duration approach, decide your tactic, fire and forget. Things like paralyze, and maybe a significant stagger should break you out of it. The kiai should take more skill to use it at the right moments maybe 3-5 times throughout the fight, and the Thu’um should be more of the finishing move, one or maybe two uses max to really break your opponent. Comparing this to the Thu’um, and especially Storm Call I’d suggest durations near the 200 seconds and a standard cooldown of 225 seconds.)
Serpent Sutra: Increase Damage by ½ x for 8x seconds
Seven Serpent Sutra: Increase Damage by ½ x for 16x seconds
Unshakeable Sutra: Increase Light and Heavy armor by ½ x and Movement by x, for 8x seconds
Unshakable Heart Sutra: Increase Light and Heavy armor by ½ x and Movement by x for 16x seconds.
Tier 4: The Mystic
At this stage your mastery transcends what can be thought of as kiai. They change the battlefield and yourself allowing those around to you fight harder and longer, or disrupting your enemies ability to fight and focus.
Edge Sutra: Increase weapon damage by 2x and Sword length by 1.5 for 4x seconds.
Perfect Edge Sutra: Increase weapon damage by 2x Sword length by 1.5 for 8x seconds.
(Note: Originally I didn’t include this one for two reasons. First it felt very Yokudan to me. Maybe we need to spend some time with Beyond Skyrim as a whole defining how sword styles differ, how the Akaviri style is different from the Yokudan style, is different from the Altmeri style. Second I it felt a little too mystical. Now that I’ve done a second pass and pushed some of these farther I decided to include it.)
Pure Sutra: Increase stamina regen by x on self and followers for 8x seconds.
Pure Land Sutra: Increase stamina regen by x on self and followers for 8x seconds.
Diamond Sutra: Increase magicka regen by x on self and followers for 8x seconds.
Infinite Diamond Sutra: Increase magicka regen by x on self and followers for 8x seconds.
(Note: I’d think of using lotus instead of diamond, or perhaps thunderbolt.)
(Note: We need some good culturally focused names here. Perhaps Demons/Daedra or the cultural equivalent)
Daedric-serpent Sutra: AOE damage stamina by .5x for 8x seconds
Red-eyed Daedric-serpent Sutra: AOE damage stamina by .5x for 8x seconds
Serpent-daedra Sutra: AOE damage magicka by .5x for 8x seconds
Yellow-eyed Serpent-daedra Sutra: AOE damage magicka by .5x for 8x seconds
Option: Silent Kiai Tier 3
Coral Kiai: Muffles sounds in the area for x seconds
Citron Coral-Snake Kiai: Muffles sounds in the area for 2x seconds
(Note: Kosumosu or cosmos means “cleanliness” or “love”.)
(Note: I’m not sure if this is possible, but snakes with neurotoxins paralyze the lungs of their target, so they don’t make a sound. This is a little too mystical to be included earlier. Maybe this could be an AOE calm effect.)
Final Notes: I’ve experienced some kiai jutsu first hand. I’m quite positive that my sensei would have said that his slowing kiai, and stopping kiai were not battle ready for use alone. He’s not one of those crazy kiai jutsu masters you see on youtube. However, none of these are meant to be used alone or win the battle alone. They are meant to create openings for the player to exploit. I like the armor skill dropping kiais as you startle your opponent and create an opening where you can really strike them. That said I’d like to see a balance where the Focus kiais trump the disruptive kiais of equal power and skill. Maybe increasing the block buffs would be a better way to create this balance.
“We don't have shields in our culture,” murmured Versidue-Shaie to the Emperor. “It seems strange to my boy, I imagine. In our country, if you don't want to get hit, you move out of the way.” ~ 14 Morning Star, 2920m Book One of 2920, The Last Year of the First Era Morning Star