I'd say it would be really good in the decks that profits from discarding cards, and also make good uses of Link/Synchro. Maybe even some fusion decks

Okay, I've been stuck on these cards a looooooong time. It was a mess to balance, but I think I managed to make something relatively fun. The cards are kinda based on soul music personified. I would have loved to make an illustration that matches the theme better, but I suck at all kinds of artistry sadly. I made the pictures with Paint 3D. Without further ado, let's review the cards. You gotta start this combo with "Soul Sisters". A normal pendulum monster that has the effect that if it is in the pendulum zone when you have no card in your other pendulum zone, you can special summon it to the field and cheat out another Soul Sister link pendulum monster from the extra deck, and put it in your pendulum zone. Nothing too complicated here. But here's where it gets spicy, with the 2 Link Pendulum cards of that archetype. Their effects are kinda hard to read so i'll just paste them here: What you want to do is, with the effect of Souls Sister, you wanna put Rab in your pendulum zone, and link summon Gospel using Souls. Now that Gospel is in the Extra monster zone, it acts as a double floodgate. It negates all effects of monsters on the field with 2500atk or more, and prevents you (not your opponent) from summoning monsters other than Normal and Gemini monsters. You also do not take battle damage from Gospel. Now, you can trigger Gospel's effect to special summon Rab directly from the Pendulum Zone, to the other Extra monster zone by discarding a card. Which will, in turn, protect both Rab and Gospel thanks to Rab's effect, which makes it so cards in the extra monster zone cannot be targeted or destroyed by battle. If any of those cards would leave the field, you can put them in the pendulum zone instead. Which can help to restart that combo thanks to Gospel's pendulum effect, that can re-summon souls from the GY and send itself to the GY. So you can link Gospel again with Souls and do everything over again. Here's the last card of this archetype. It has 2 uses. Either you play it as a Gemini card, which has the effect of destroying a card on the field and double its attack (making it 2600atk, 100 more than Gospel's floodgate benchmark). Or use it as a pendulum that will allow you to access another normal summon, to better support other normal and gemini cards in your deck.   That's it for this archetype. I hope you liked it, it might still be a bit broken but I think they're pretty fun.

Cormag locked eyes with Melissa as she pet him. After some time, while he didn't ever appear to enjoy it, he seemed to accept her petting him and the light growl, more of a grumble, faded away. Though  Melissa would notice the beast's eyes darting up and over her shoulder on occasion. And when they did he flattened down a bit and arched his back as if preparing to dart up and grab something that no one could see. Rona noticed this but didn't think much of it as she replied to Trevor's  “No matter, Team Manna should be able to handle these tasks without any issue whatsoever.” "Oho? A confident one are you? Well as the veteran team here you don't have to worry too much. We, well some of us, are willing to take responsibility for any issues. Just relax and the job will be done before you know it!" She gave a bit of a sheepish smile, "though, yeah, maybe there are a few complications. You see..." Just then they could hear a "waaaaaaaiiiiiiiit I'm coooomiiiiiiiiiiiinngggg hold onnnnnnnnnnnnn!" from all the way across the park. A dark haired girl with bright eyes came running up to the group and practically crashed into Cormag. The wyvern merely growled and took a few steps away to avoid the girl but seemed more annoyed than angry. "I'm totally not late right? It's not my fault! I was on my way here when I saw someone giving out hot dogs. For FREE. Free hot dogs! How could I pass that up without having at least ten? Oh! That reminds me." She dug into a bag and pulled out a handful of hot dogs wrapped up in some sort of film and handed them out to each of them, including Cormag, and smiled apogetically. "I know there's only a couple each but I think the guy was getting mad at me for taking too many. Which is crazy right? I mean who can't eat that many hot dogs?" Rona sighed. "You haven't even introduced yourself, Hana. Priorities, remember?" "I know! And hot dogs are priority one! Plus, you just introduced me!" She smiled at the group and shook her head, "she's silly isn't she? But heya, I'm Hana!"