Feats are the most powerful form of techniques that any player can have. Unlike standard techniques, these usually do not require hand seals to be performed and are fundamentally stronger than most slotted techniques and even special items. This stipulation, or lack thereof, varies depending on the ability but does little to diminish its overall formidability.

With great power, however, comes great---limitations. In order to keep them from being overpowered, they need to be contained in some way. Costs are one way of doing this, though, there are others like Limited Uses, Turn Duration, Power-level Comparisons, and Cooldowns. Sometimes more than one of these may be required.

Aside from these examples, there are other ways to make your Feat workable. Use your imagination, and work with staff to try and bring your vision---or any iteration as close as possible to what you envisioned---to life.

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Costs are typically measured by just how powerful the effect of the Feat is. For example, if the ability is to cover your body in a persistent barrier, the cost can vary pretty much however you want it to. Not too high, of course, but it can be as big a part of your arsenal as you wish. Now, if the ability is to be able to reincarnate powerful beings as summonings under your control.

That’s undoubtedly going to have a pretty high cost attached to it.

There is no set scale as to what any effect will definitely cost. Use your best judgment when it comes to this part; staff may readjust it anyways upon review.

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Limited Uses is typically the best way of making a powerful technique approvable. Any especially powerful effect or ability shouldn’t be repeatedly used over and over without anything to counter its formidability. This can be a “per fight” or “per round” limitation, with the former being reserved for the strongest. Even a “per writing week” can be applied for extremely-potent abilities.

Think of it this way: the less powerful, the more frequently it can be used. The more powerful it is, the less frequently it can be used.

Jai Ho!
Feat: Unique
With a powerful BE VICTORIUS and 10% of her Chakra, Bollywood Gal instills a powerful ambition in an ally to do their best. She allows his ally’s next attack to pierce any damage reduction or barriers her opponent has which cost less than the 10% paid. However, victory can sometimes lead to overconfidence, therefore she only use this ability 3 times, gaining another use every 3,000 Chakra, capping at 6 uses.

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Turn Durations are for effects that are meant to be constantly in use, from round to round. For instance, an ability that increases the cost in Chakra the opponent must spend in order to use the Body Flicker technique can affect the opponent for so many rounds before the effect wears off; maybe 3 to 4 rounds. Again, however great the effect, the less time that it can be maintained.

Showstopper
Feat: Unique
Breaking into song, Adam wows his opponent with his music, by paying 5% of his Chakra. As such, his opponent finds it harder to run away from him, in awe of his ability. As such, for the next 4 turns, the cost of Body Flicker for his opponent is doubled. At the end of the 4 turns he must wait 2 turns before repaying the cost and activating it again.

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Power-level Comparisons are a way of measuring how effective the ability will be on different types of opponents. For instance, an ability that instills fear in someone through the projection of immense Chakra would not be as effective on a Kage-level character if it is coming from a genin. The opposite would hold true as well; genin could, in this case, be utterly dissuaded from even attacking for one or two rounds after the effect is in place.

You can use your Chakra as a stipulation or, in cases where it could apply, your individual stats like Bukijutsu, Taijutsu, etc.

Personal Bubble
Feat: Unique
Sam, due to his fear of other people, has gained a large personal bubble around himself. By paying 3% of his Chakra per turn, he can project this aura around himself. Weaker opponents are completely unable to enter the sphere. Opponents with equal Chakra (50%-199% of her Chakra) find it difficult to stand the man’s whimpers of fear, therefore they can only stand in the bubble for 2 turns before being forced to leave. Stronger opponents are unfazed and can freely walk in and out of the bubble.

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Cooldowns are cooldowns. You know what those are, right? Right. Good.