Sword of Conquest MK II
Damage - Rank I (+100)
I'm trying to write this blade up to be similar to the Sword of Conquest Warren had originally, but I'm not sure how to adapt it to the game.
First off, the move would look something like this when making new moves.
Sword of Conquest MK II
Damage - Rank I (100)
[Modifications: Removable (-50), Activation (-50), Ongoing (+100)]
Note Rank 1 damage is akin to a knife, so damage rank 2 is more what you want since that is what they set as a general sword or long dagger damage threshold. Also since its a bit harder to get rid of purchases you don't want; because you need tokens to do so, I'd make sure this is what you want to start with before purchasing it.
Sword of Conquest Mk II
A sword that is made out of purple and black, and gray metal. It takes three seconds for Warren to unsheathe the sword, and five seconds for him to activate the sword's properties. Capable of clashing with most weapons, the Sword of Conquest MK II is a technological recreation of a blade once possessed by Warren Zimmer when he was in the Omniverse.
Total Cost: 200
Activation requires at the minimum 10 seconds to let you use the ability (of which you are still only doing 8 seconds, i'd personally just make the statement 10 seconds to activate in any situation). I'd assume this isn't what you're looking for so Activation can go away. Besides that the ability should be good if it's how you want it.
See, I was trying to do a summoning type thing for the blade. Unfortunately, there's no side-effect / weakness that could qualify for such. To my knowledge anyway.
Lunar rays "Lunatic image"
Debuff tier 5 (100)
[modifications: Chaotic (-50), finite (-50), indiscrimanant (-50), affects multible x5 (+250).]
Using the myth that the moon's ray's cause insanity. Chang'e uses her weakened divinity here to make herself into a bright light for a few seconds using this exact concept. Anyone who looks upon her during this time becomes much more aggressive losing the ability to tell friend from foe. She won't use it more than once a fight/scene to conserve her saved up faith.
Lunar Rays "Lunatic Image" 
Debuff 5 (500)
--Affects Multiple 5 (1250)
Using the myth that the moon's rays cause insanity, Chang'e, through her weakened divinity, can cause herself to shine with bright light for a few seconds. Anyone who looks upon her during this time becomes much more aggressive, losing the ability to tell friend from foe.
To conserve her saved up faith, she won't use this power more than once per fight/scene.
Variable Creation: Battle Tech
Variable Creation - Rank 3(600)
-Limited - Certain elemental damage is weakened on certain things. Examples being Electricty won't work well on a creature made of earth, or Fire being less effective on water creatures.(-150)
-Weakness - Fire fails to activate the stun effect while Electricty fails to activate Damage over Time effect.(-75)
-Finite - She only builds around ten or so before hand before she needs to use her magi-tech to reload her supply.(-150)
Effects the Creation can do
Damage(Fire, Electricity, or Ice) - Rank 4(400)
-Trigger -Hits a target when thrown, walking within a five foot radius of it.(400)
Debuff(Temporary Stun - Electricty/Ice Only) - Rank 3(300)
Debuff(DoT via Burn/Frost - Fire/Ice Only) - Rank 2(200)
How does this look?
Variable Creation: Battle Tech 
Variable Creation 3 (600)
Damage 4 (400)
--Triggered (5 ft Radius) (400)
--Affects Multiple 1 (200)
Damage 2 (200)
--Triggered (Detonation) (200)
--Affects Multiple 1 (100)
Debuff 3 (Sluggishness) (300)
--Triggered (Detonation) (300)
--Affects Multiple 1 (150)
Kokonoe can construct a wide variety of explosives to aid her in battle at a moment's notice, though she can only produce a total of 10 "Battle Tech" devices per Fight/Scene, due to the limited supply of magi-tech parts she is able to carry on her person at any one time. This Ability consists of three separate Effects: the first allows Kokonoe to quickly craft an explosive of up to 4 ft in size, provided the parts she uses to do so have not all been used up or stolen from her. The second involves activating and throwing the device (again, provided no one grabs it before she can). If she misses her throw, the explosive will activate a proximity sensor, detonating whenever there is anyone anyone (including Kokonoe herself) within 5 ft of it. Lastly, in addition to the Damage of the initial detonation, anyone within range will also suffer one or more of the following additional Effects, depending on the type of device crafted:
1) Fire: Be set aflame and continue to burn until the fire is extinguished. This Effect is useless against water-based lifeforms and also anyone who just happens to be underwater, as water extinguishes flame.
2) Electric: Be partially paralysed for a few seconds as the electricity coursing though their system, causing them to move sluggishly for a few seconds. This Effect is useless against earth-based lifeforms.
3) Ice: Be chilled briefly, slowing them for a few seconds as well as inflicting continuous freezing damage on their body until they can warm themselves up. This Effect is useless against fire-based lifeforms, as they have no trouble keeping warm.
I'm going to try and rewrite this Ability for you... however it would be easier to do this correctly if you would've included a description of the Ability when posting it here... nothing but a list of Effects and Modifiers doesn't really explain how something is actually going to work. Your attempt was slightly clearer than it could have been, since you did include some information (which should've been part of the description) in the Modifier list... but try not to add notes to your Modifiers except when absolutely necessary, and always keep them as short as you can... for extra details, just write a description.
Also, I will point out that you may not want to get your hopes up as far as costs are concerned... Tenshi's estimate completely failed to take into account any of the Modifier costs... with those included it'll be much more expensive, especially as your Ability is not actually eligible for the Limited and Weakness negative Modifiers. You can include limitations and weaknesses for the sake of making an interesting narrative if you'd like, but as they only partially apply to your Ability, you can't get a cost discount for them.
As you can see, the Total Cost of this Ability is now €1,850... more than Tenshi predicted, but far, far less than it would be if you split it into 3 separate Abilities in order to keep the Limited and Weakness Modifiers that you wanted, as Jeff suggested... that'd be somewhere around €3.5k, by my estimation.
Also, you'll notice that I've changed your stun into sluggishness. That's because a stun would be 100% movement reduction, which is Debuff 5... with Debuff 3, you should only be slowing an average person by 60%. And I've made a few other changes as well. If you can't understand why I've written something in the way I have and would like an explanation, feel free to ask away.