Luck

Overview
Luck is a mechanic that allows you to gain more rewards from quests. This can be useful for gaining more rewards during quests around for a limited time, or for farming useful equips.

At the end of each quest, on the screen that shows you the rewards gained from slaying enemies, a section on the bottom will show you the Luck rewards you obtained. Its likely that new players will only rarely get rewards here, as these rewards are essentially only obtained through sheer luck. However, you can guarantee that you receive Luck rewards if you have a unit in you party that has at least a Luck Value of 100.

If you have a unit with a Luck Value of 100 or more, you are guaranteed 2 random rewards in the Luck Rewards section. However, getting a unit with such a high Luck Value is difficult, unless you obtain and increase the Luck Value of dedicated Luck Units. These units are made specifically for the player to obtain more rewards from quests, at the price of largely being less capable than summonable units and needing to farm their respective Limit Break Units.

This brings us handily to the next point of interest on Luck. The maximum Luck Value of any unit is tied directly to its evolution level, or the number of ★ assigned to that unit. It increases in increments of 20 with each evolution. - 1★ has a Max Luck Value of 20 - 2★ has a Max Luck Value of 40 - 3★ has a Max Luck Value of 60 - 4★ has a Max Luck Value of 80 - 5★ has a Max Luck Value of 100 - Awoken 5★ has a Max Luck Value of 120

The exceptions to this are Luck Units, Ultra Luck Units, Rayas and Iris. Several Luck Units cannot be awoken yet, but can still have a Luck Value of 120, like Sophie and Nier. In the case of Ultra Luck Units, they have a Max Luck Value of 140. Finally, for Rayas and Iris, after Update 3.8, their potential Max Luck Value has been increased to 300, with more units planned to join that Maximum in the future.

Something worth noting is that the Max Luck Value seen above is not 100, but 120 for Awoken units. This is because you get 2 Luck Rewards for having a unit with a Luck Value of 100, and for every 20 additional points to a unit's Luck Value above 100, you get an extra Luck reward. So a unit with a Luck Value of 120 will get you 3 Luck Rewards, an Ultra Luck Unit with a Luck Value of 140 will get 4. However, once a unit has a Luck Value of 200, if takes another 50 additional points to a unit's Luck Value to increase the number of rewards again, up to 300. So a unit with a Luck Value of 300 in your party will net you 9 Luck Rewards.

Increasing the Luck Value of your Units
There are only 3 ways to increase the Luck Value of your units: - Limit Breaking identical units together: If you summon several of the same unit over time/on the same banner, limit breaking them will add up their Luck values into the unit that is left after Limit Breaking. ''Example: You summon Weaver on a banner at with a Luck Value of 5, and several weeks later, you summon him on a Alch banner, and this one has a Luck Value of 2. Limit Breaking them together will leave you with a Weaver with a Luck Value of 7.'' - Obtaining Limit Break Units for Luck Units: Dedicated Luck Units can be obtained easily, and the quests associated with said Luck Unit will allows you to obtain Limit Break Units for that unit, with which you can increase the Luck Unit's Luck Value. This is the alternative to summoning these units. - Using Lucky Gems: Lucky Gems were introduced relatively recently, which can allow you to increase the Luck Value of your units, regardless of whether they are Summonable units or Luck Units. For every Lucky Gem used, the Luck Value of that unit is increased by 1. However, they are relatively difficult to obtain and impossible to farm reliably, as they are usually only rewards for completing events, login bonuses or on very rare occasions drops from the Mines location in the Town. - On this last point, there are exclusive Lucky Gems associated to some crossovers. They function exactly like Lucky Gems except they only apply to Summoned Crossover Units related to that specific Crossover. Depending on the number of units you can summon during that event, these gems can be easy to obtain or quite an effort. They first started appearing with the Yu Yu Hakusho event, and have since appeared in 3 other crossovers. Another difference unique to these Gems is that they don't increase available Luck Points for Luck buffs past the crossover cap of 120 (Nor can normal Lucky Gems). This will be explored in more detail below.

Disclaimers and Multiplayer
Before you go out and grind out Luck events to have 4 Luck Units with maxed Luck Values for a party that gets a dozen Luck Rewards with every quest, there is something worth keeping in mind. When calculating Luck rewards, Only the unit with the single highest Luck Value will be used to determine the number of Luck Rewards obtained, regardless of how many units with a Luck Value of 120 or more are in the party.

Multiplayer is a way to get around this, but there is a catch. While the host can have a unit with a Luck Value of 120 or more and get the equivalent number of rewards, all guests in a multiplayer quest using a unit with a Luck Value of 100 or more are capped at a Luck Value of 100, meaning 2 more Luck Rewards for every guest player with a unit that has a Luck Value of 100 or more. Also, every player in the party will get the same number of Luck Rewards, even if they did not contribute to this with a Luck Unit of their own.

Finally, there is a mechanic in Multiplayer where if the party uses the same food, the Luck Value of any unit below 100 is increased by 20. This is useful if a player in the party has a unit with a Luck Value between 80 and 99, as they now can net the whole party an extra 2 Luck Rewards. While it does not apply to all food, it is a safe bet to use any of the 5 Cheeses or to use 4 different cheese to gain that extra 20 Luck.

Luck Buffs


Introduced in Update 3.8 alongside the second rerun of the Goblin Slayer event, Luck Buffs are a new way to improve key stats of your units, as well as improving them in ways not offered before.

How to Use
Luck values of units was previously only useful for earning more rewards from quests. However, after the introduction of Luck Buffs, you can now improve your units' ATK, DEF and HP, as well as other traits. First, a few things to clarify.

- The Luck Value of units is only used for gaining more rewards from quests. It also applies exclusively to that specific unit, and does not stack no matter how many of that unit you may have. The only way to increase a units' Luck Value is to Limit break it with the same units, Limit Break units if it's a Luck Unit, or applying Luck Gems to that unit. Refer to the section above for ore details. - Luck Points are used to enhance your units, and are applicable to all the copies of any given unit. They do not disappear when a unit is sold, but each point can only be used once. Luck Points are gained by summoning the same unit, Limit Break units for Luck Units and Lucky Gem. However, unlike with Luck Value, there is no limit to the amount of Luck Points that can be applied to a unit, except for the limits to the available enhancements, especially with crossovers units, as shown below.

''For example, you have summoned 2 of Vox, one at Luck 5 and the other is Luck 1. Unless you Limit Break them together, their individual Luck Value will remain the same, but they both have access to 6 Luck Points between them to enhance their stats. If you were to use 5 to enhance one of them, they will now only have 1 Luck Point to use for enhancement. Now the only way to further gain Luck points for these two units is to summon another, or to use Luck Gems on either one of them.''

Effects
Luck Buffs allow you to enhance up to 6 attributes of any unit: - ATK, DEF and HP in increments of 50, up to 1000. - Reduce Skill CT in 1% increments, up to 10%. - Increasing a units' Arts Gauge at the start of a Quest by increments of 1, up to 20. - Giving a unit a second Crest slot. However, it's worth noting that these buffs apply in different ways to different units. Units in game are split into 3 categories for Luck Buffs, which are listed below.

Max Evolution 5★ and Awoken Units These units have access to all the Luck Buffs available. Seeing as its hard to increase the Luck of these units compared to the other two categories, the cost of enhancing them is lower. For example, the cost of enhancing any attribute increases with each level by 1. Therefore, enhancing the ATK attribute from levels 1 to 3 costs 1, 2 and 3 Luck Points, for a total of 6. Also, the Cost of adding a second crest slot costs 30 Luck Points, unlike the other two categories. Luck Units & Max Evolution 4★ Units Luck Units and units that cannot pass the 4★ evolution threshold are relatively easy to obtain, and therefore gain Luck Value and Points more easily that the previous category. Because of this, Luck Buffs are more expensive for these units. While they have access to all the buffs, the cost makes it harder to enhance nearly as much as the previous category. For example, the cost of enhancing any attribute increases with each level by 2, and starts at 2. Therefore, enhancing the ATK attribute of these units from levels 1 to 3 costs 2, 4 and 6 Luck Points, for a total of 12. Also, the second crest slot cost 60 Luck Points, as opposed to 30. Crossover Units Crossover units are similar to Luck and 4★ max evolution units, as with the Yu Yu Hakusho Event they introduced Crossover gems used specifically for increasing the Luck of the crossover units of that event. Because of this, the enhance cost is the same as the previous category, with the cost increasing by 2 every time and the second crest slot costing 60 Points. However, unlike the other 2 categories, they can not improve their Skill CT or their Arts gauges at the start of the quest, and they can only enhance their HP, ATK and DEF values by 250 each. All this adds up to crossover units having a max number of available Luck Points of 120, the same as their Max Luck Value. ''Note: As of the time of creating this page, only a few crossovers have crossover gems. The crossover events that do not have Crossover gems are: Golden Kamuy, That Time I got Reincarnated as a Slime, The Rising of the Shield Hero and Hatsune Miku. Perhaps in future reruns they will have specific Gems introduced for these events.''