To be able to use the relics, you have to complete G12 mainstream, and you will see your new inventory screen like the following:
You will need to find the God Relics in the Realms of Falias and put it into the corresponding slots to enhance your Demigod skills like the following picture:
There are 4 slots total, so you may equip up to 4 God Relics. However, completing G12 will only unlock the first slot. As to how to free up the other slots, that's a story for another time (Related to Charity Box of the Pontiff Court).
Now, we know how to unlock the slots, how to we get the God Relics from Falias?
Simple, in order to enter Falias, you need to have an item called Piece of Falias (picture above) which you can get from the Tara Bank Part Time Job as the reward.
Once you have the piece you simply need to use Brionac (and yes, you need to activate Brionac for it through spark (novice rank is fine or awakening) and activate the portal to Falias. You may bring other people into the city as well when they are in your party (Up to 8).
*Note the Falias Pieces will disappear when you do this, so you will need more than 1 Pieces of Falias.
Once teleported to Falias, you can start the mission in hoping to find the relics. To start, the Team Leader must click on the altar to start the mission. However there will be a few monster called "Aonbarr" guarding the altar. You must defeat them first, then click on the altar.
When you click the altar 3 things can happen:
1. Congratulations, You get the Relic without having to do anything (chances are about 1/4)
2. Trap activated, groups of Aonbarr will appear to rush to the altar, you must guard it and not let them pass the altar for 3~5 waves. Once completed, you will receive the reward. (about 3/4 chance)
3. Altar is broken, You fail directly without getting anything. (about...1%)
Hooray! Now we can use the God Relics once we complete the mission! Hohoho, not quite so... if is that easy this won't be Mabi at all. When you get the relics, they will be unidentified, you must identify and restore them in order to use it (Voight-like much harhar....).
That's right, the nice old lady, Dorren in Taillteann will help you restore the relics. In addition you will need the "Pure Crystal" or the "Red Pure Crystal" to restore it.
the Pure Crystal have the repair rate of 30% and the Red Pure Crystals have the repair rate of 45% (Ferghus, your rate just looked alot better...).
Once repaired you can equip it and enhance your demigod skills!
But wait! There's more! (What?! More?!)
That's right, like all equipment in game, the relics have durability as well. That's right, you have to repair them when it loss dura! And all relic (Start with 20 dura) will have 96% repair rate at 30k per dura.
...That seems like alot work ="= but what do these relics exactly enhance and how much do they enhance?
Well, different relics have different effects. And even if is the same relic, their enhance bonus might be different because each relic have a "Grade" assigned to it.
That's right, all relic are divided into 4 Grades: "C" "B" "A" "S/X", C being the lowest grade and S/X being the best.
Now knowing there's different grades, let's take a look at what exactly these relics do:
Dagda’s Cauldron (Require Equipping Brionac to Work).
C: Brionac Damage + 3
B: Brionac Damage + 9
A: Brionac Damage + 15
S: Brionac Damage + 24
Failinis (Require Equipping Brionac to Work).
C: Brionac Critical Rate + 3%
B: Brionac Critical Rate + 9%
A: Brionac Critical Rate + 15%
S: Brionac Critical Rate + 24%
Manannan's Breastplate (Require to Equip Before using Fury of Light to Work).
C: Fury of Light Damage + 3%
B: Fury of Light Damage + 9%
A: Fury of Light Damage + 15%
S: Fury of Light Damage + 24%
Golden Apples (Require to Equip Before using Spear of Light to Work).
C: Spear of Light Damage + 3%
B: Spear of Light Damage + 9%
A: Spear of Light Damage + 15%
S: Spear of Light Damage + 24% [AP CANNON FIRE AWAY!]
Uaitne (Require to Equip before using Awakening of Light to Work).
C: Duration +5 sec
B: Duration +15 sec
A: Duration +25 sec
S: Duration +40 sec
Goblet of Truth (Require to Equip before using Awakening of Light to Work).
C: Cool Down -10 sec
B: Cool Down -30 sec
A: Cool Down -50 sec
S: Cool Down -80 sec
Manannan's Wand (Require to Equip before using Shadow of Spirit to Work).
C: Damage + 3%
B: Damage + 9%
A: Damage + 15%
S: Damage + 24%
Ocean Sweeper (Will activate without using any skills).
C: Movement Speed +2%
B: Movement Speed + 6%
A: Movement Speed +10%
S: Movement Speed +16% [Elf the Flash ="=]
In addition to these there are a couple more, that is adding to your stats (Str, Dex, Int, Will) when you use Awakening of Light
C: Stat +20
B: Stat +30
A: Stat +45
S: Stat +60
And there's one that enhance the Magic Music Effect:
C: Music Effect + 3%
B: Music Effect + 9%
A: Music Effect + 15%
S: Music Effect + 24%
And that's all about the God Relics, is it worth? Maybe, maybe not, but the bigger question should be can you handle the 30% and 45% and the horrible Tara Bank PTJ?!
Regardless, if you want to enhance your Demigod skills, march on to Falias!
*Note: If you equip 2 of the same type of God Relic, only one will activate, so you cannot equip 2 Ocean Sweeper to get more movement speed increase.
*Note2: God Relics cannot be traded once it is repaired and equipped (considered as personalized) but can be blessed with holy water. However, you can trade the relics when it is not restored. The only way to trade the Relic after it is restored is through the Personal Canceling Potion, which remove the Personal Status (for the Personalized Enchant as well). However, Nexon has yet to put this item into the cash shop.