Limit breaks are the designation of techniques and abilities that go beyond the current limits of their user's capability. They are miraculous trump cards that only arise in moments of desperation, greatly swinging the tide of battle for the one able to pull them off. Now you too can use limit breaks.
You now have an internal pool of energy that slowly builds over time as you begin and continue to battle, which can be visualized as 3 gauges. The more intense the battle, the faster the bar fills up. When one of the bars fills up completely, you can amplify a single attack or ability by 5 times its original potency. The amplifications stack upon one another, so using 2 bars would boost the potency to 25 times, and using all 3 bars would boost the ability to 125 times its original potency.
This boost in potency doesn’t only give a raw boost in power but also an additional modifier that the attack or ability did not have before such as a healing spell gaining the ability to resurrect the dead, a defensive ability granting invulnerability to all damage for a time or an attack gaining the capability to ignore all defense and becoming sure hit. The more gauges are used the more additional modifiers will be granted to the abilities.
The bar can only be charged up when engaging in combat but will not dissipate when the battle is over. This means you can save limited gauge energy for future encounters. While you start with 3 bars your internal pool of energy can grow over time with the use of limit breaks so you can gain additional bars as you keep using them.