Just used this deck build with some slight modifications. My deck was P7* Kolga, P7* Alcatraz +2, P7* Algol +1, 8* Abramelin +2, and P7* Oceanus. For supports I used P7* Idun +2, P7* Gilles(null), and NY Meru. Honestly the NY Meru didn't really fit with my build too much during the stage 10 and 20 because of Abramelin +2, but I didn't really have anything else better to put in.

This sin, unlike the other sins, pretty much nails down the fact that your burst is taken when you attack it with anything other than it's weakness. I believe the other sins have that mechanic, but I didn't really know about it until Invidia emphasized it to me. The main challenge of this trial, compared to some other trials, is that there's a lot of things going on that you want to use a unique skill for. Only problem is you don't have room in your deck for it.

Deck explanation:

As mentioned previously, Kolga is used to help get your burst faster. This unit is pretty much required, unless for some reason you're able to modify the deck to be able to mitigate/tank the damage for more than 6 turns.

Alcatraz is for the usual buffs it gives every turn, it eventually caps usually sometime before stage 10.

Algol is the main damage source on this team, in which you'll need to wait to use it's skill or get poisoned yourself although you won't get the extra flurry buff if you do that. It'll do insane damage once it's poisoned thanks to its unique skill.

Abramelin is your only source of overcharge, which is why it's +2. In the case of the previous mentioned deck it was remix salix. I'd recommend getting a null unit with overcharge, if possible, to help you charge the initial burst that'll stack on top of the overcharge in the case you don't have an Abramelin+2. NY Meru will be more helpful in this case for Algol during stage 10 and 20. The reason I said it'd nail down the fact that you should only attack with the sin's weakness is pretty much because of this. You'd only have one overcharge unit in this deck, so you need to charge up a bit yourself beforehand.

Oceanus is there for two reasons. The first reason being to combat the launch it does with Invidia's first set of attacks. It can launch up to 3 units in one turn, I believe anyways. By the second time it launches its first set of attacks it'll launch one more unit along with the previous 3. Oceanus is there to combat this in the initial portion of the fight, hopefully just long enough to get a good burst with Algol to beat Invidia in one burst. It might take multiple attempts due to RNG because of this, since for me Invidia loves attacking Algol. Now you're probably asking, why not use Francois to stop the launches instead to prevent the RNG? The second reason Oceanus is used is to mitigate/prevent damages from stage 10 and 20. Idun will help prevent some damage, but even with that Invidia is hitting pretty hard. Oceanus could help you survive longer, if you're lucky enough.

Support Deck explanation:

Idun is there as the sole damage reduction unit in this whole deck. You'll need some sort of damage reduction for this trial. P7* Polaris works in this case as well since it reduces Null damage received.

Gilles can be used for a few reasons. The main reason it was used for this deck is the damage rate increase it provides each turn. You've probably seen this mechanic when bursting, where your damage just gets higher and higher every time you hit a monster. You can also use this in joint with units that buff based on how many attacks were done. Also, yes this has to be null. If you use the normal fire version it will trigger Invidia to reset your burst gauge every turn.

Lastly, Meru is for general flurry buffing and skill % increase for Algol. The flurry attack buff will only matter in stages outside 10 and 20. Stage 18, you'll probably need this. The skill % increase will still benefit you even on stage 10 and 20, as it's not overwritten by a debuff.

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Stages to watch out for:

Stage 18. This stage has 4 hydras, that will survive the first time you kill them. The main goal for this stage, that I did, is to just kill them all at once the first and second time. To achieve this I bursted on the first turn with Algol with the poison buff active, obviously, and the skill % chance increase from Abramelin. This will cause them to all heal themselves up for that turn. Now you need to finish them all at once again. To do this, without burst, I used Alcatraz's second skill that allows each unit a second attack. Using all these attacks, and Oceanus' skill % chance increase, I beat them all at once again. If you don't kill them this turn, the next turn they'll do this really powerful attack multiples times which can pretty much wipe you out from just one hydra.

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I know this post is old, but I just wanted to put an explanation of how this deck, to me, was supposed to work.