Here is a guide to help you understand how coolness and finale works.
Basics
The box on the furthest left with 12 right next to it is called Powerful Dance. Powerful Dance is applied to the 1st, 5th, 9th… abilities. To have powerful dance apply to your abilities you need to equip the mastery Powerful Move. For every stack, you gain 20 attack power, so I gain 240 attack power for having 12 stacks of Powerful Dance. Each time you trigger Powerful Dance, you gain a stack of Chance To Win.
The box on the second from left with 8 right next to it is called Delicate Dance. Delicate Dance is applied to the 2nd, 6th, 10th… abilities. To have Delicate Dance apply to your abilities you need to equip the mastery Delicate Move. For every stack, you gain 1.25% critical hit chance, so I gain 10% critical hit chance for having 8 stacks of Delicate Dance. Each time you trigger Delicate Dance, you reduce the cooldown of all other abilities.
The box on the third from left with 4 right next to it is called Cheerful Dance. Cheerful Dance is applied to the 3rd, 7th, 11th… abilities. To have Cheerful Dance apply to your abilities you need to equip the mastery Cheerful Move. For every stack, you gain 1% dodge chance, so I gain 4% critical hit chance for having 4 stacks of Delicate Dance. Each time you trigger Delicate Dance, you reduce action time by 10.
The last box with 4 right next to it is called Fancy Dance. Fancy Dance is applied to the 4th, 8th, 12th… abilities. To have Fancy Dance apply to your abilities you need to equip the mastery Fancy Move. For every stack, you gain 8% critical hit damage, so I gain 32% critical hit chance for having 4 stacks of Fancy Dance. Each time you trigger Fancy Dance, you increase your SP by 10.
Each of these masteries will get you another performance slot to fill. There are also other masteries that can increase the number of slots you have (These can be seen in the next section).
Whenever you have 4 performance effects in a row and they are all the same or all are different, all 4 will be emptied and you will increase your Coolness level by 1. You will also activate Contraction for all enemies in 4 tiles (8 in picture due to mastery set) if they are all the same performance effect, and if they are all different you will recover one action point. Explosion and Gorgeousness either don’t activate, or they don’t consume performance effects(This can be seen in the picture by observing the performance effect in the slots). In the picture, I have 3 coolness. This is shown right above the performance slots.
Whenever you fill all of your slots you will activate Finale. When Finale activates, it will empty all performance slots and remove all levels of coolness. Finale will cause all effects that are listed for the level of coolness you had and below. If I filled all of the slots with 3 coolness, I would cause all enemies in 8 tiles (4 base) to have Contraction and increase their action time by 20. All allies in the same range would also have their action time reduced by 20. Finale can also be triggered by activating Improvisational wrap up and using an ability.
Masteries and Mastery Sets
Dancer:
Powerful Move- Increase performance slots by 1, your first available ability and every 4th after becomes a Powerful Dance type ability(Performance Effect). Using a Powerful Dance type ability grants the user Chance To Win, and turns the users next empty performance slot into a Powerful Dance Slot.
Delicate Move- Increase performance slots by 1, your second available ability and every 4th after becomes a Delicate Dance type ability(Performance Effect). Using a Delicate Dance type ability reduces the cooldown on all other abilities by 1, and turns the users next empty performance slot into a Delicate Dance Slot.
Cheerful Move- Increase performance slots by 1, your third available ability and every 4th after becomes a Cheerful Dance type ability(Performance Effect). Using a Cheerful Dance type ability reduces the action time of the user by 10, and turns the users next empty performance slot into a Cheerful Dance Slot.
Fancy Dance- Increase performance slots by 1, your fourth available ability and every 4th after becomes a Fancy Dance type ability(Performance Effect). Using a Fancy Dance type ability increases the user’s SP by 10, and turns the users next empty performance slot into a Fancy Dance Slot.
Superstar:
Enthusiasm- Increase performance slots by 2. increase range of Coolness and Finale to a radius of 6 tiles.
Improvisational Wrap Up- Trigger Improvisational Wrap Up (your next action triggers Finale).
Rising Star- Increase performance effect level by 1
Encore- Triggering Finale causes you to regain a number of slots equal to Coolness level up to your maximum performance slots minus 2
Regular Performance- Triggering Coolness, causes you to regain the last performance slot used.
Spotlight-When Coolness triggers, SP and Vigor increases by 10 and reduces action time by 10.
Dancer:
Dance! Dance! Dance!- Increase performance effect level by 1
Superstar:
Encore Performance- When Finale triggers and Coolness level is greater than 1, you regain 1 action point.
Huge Prosperity- Increase range of Coolness and Finale to a radius of 8 tiles
Show on Tour- Whenever you fill a performance slot, if the slot is the same as the previous slot, reduce action time by 10. If it is different, increase SP by 10.
Superstar:
Increase performance slots by 2
Leton:
God Given Talent- Increase performance slots by 1 and performance effect level by 1