When using this deck, try to get a powerful gemini monster out as soon as possible. Easiest way to do this is get them into the graveyard, then special summon the monster with one of your many revival effects. Balance helps you consistently get a playable starting hand.
Revival is a big part of this deck, half of your cards revive monsters from your graveyard.
A good combo to special summon two high-leveled monster from the grave, would be to use Blazewing Butterfly equipped with Supervise. Send Blazewing Butterfly to the grave to special summon a gemini monster, then with Supervise in your graveyard special summon another gemini monster.
These monsters are the final goal of your deck, get one in your field or graveyard and you can revive it practically anytime. These monsters are all of these monsters provide powerful effects.
Phoenix Gearfried is a great boss monster for any gemini deck, boasting great stats, revival effect and a protection effect.
Poly-Chemicritter Dioxogre is another great beater with positive effects like protecting your gemini monsters during summoning, and even better a monster destroying effect.
Poly-Chemicritter Hydragon is more of a support monster. He adds 500 attack and defense to every gemini monster summoned while he is face-up and protects gemini monsters from being destroyed by card effects, while also having excellent defense.
...Except whenever a strategy gets a decent amount of new support (i.e., new/more copies of Chemicritters appearing, Gemini support coming out semi-recently, etc.), and with this deck directly relating to an event currently going on right now, Gamea might have reason to listen to such a request. Not to say it'll instantly jump to the top of their to-do list, but still.
Thanks for the feedback all. I don't send Invader to the graveyard, if he happens to be in my hand then I summon him with Doom Shaman lol. The deck is slow at first to send those monsters to the graveyard so I might consider the skill Fiend Fairwell to speed up the process. I used Dark as Night for the lulz, I finally got it after farming for a week straight :)
My starting hands aren't too bad because of the drawing power of Featherizer, and Herculean Power lets me use Butterfly and Carbo Crab without Supervise. If I use the skill Restart I can take out those Herculeans and replace them with something else, I'll have to try it out and see if it works better.
You should use the skill fiend farewell, remove at least 1 featherizer (I never run more than 2 considering destroyed by battle is very conditional in current meta). and add either curse of anubis or some other stall card.
just realise another stupid mistake from gamea, write the box needed properly
you need Chaotic Compliance for Phoenix Gearfried and they didn't even write that in