Thrakkus doubles the power of your dragons each turn when it attacks, which makes one-shot combat phases a possibility, especially if you can give your dragons double strike
Purple has Gum-Gum Jet Gatling, in Blue you have Gum-Gum Rain, in Green it's Because the Side of Justice Will Be Whichever Side Wins!!, Black's version of this card is Six King Pistol, and Red has several zero cost events (that pair well with Rayleigh) but the one from this cyclce is Bad Manners Kick Course
About the Seller Father and Son Streamer of Pokemon from Vintage to Modern
On the other hand, Kirlia will work as your deck's engine
I did a deep dive on Ghalta and Mavren if you want to dig in further
Moreover, once per turn, players can also transform the level/star of Tragoedia to be the same as any one (1) Monster in the GY, perfect for level-dependent XYZ Summoning