There are a few ways for self-mill decks to win
Essentially, Scythecat Cub is just a better version of Territorial Scythecat in the vast majority of decks
At the End Phase, Yami Yugi's "Selection Token" is destroyed
Includes members/support for the "Archfiend", "Blackwing", "Buster Blader", "D/D", "Dark Magician", "Destruction Sword", "Dinomist", "Dracoverlord", "Dracoslayer", "Frightfur", "Lunalight", "Magician", "Ninja", "Odd-Eyes", "Performapal", "Red Dragon Archfiend", "Resonator", "Shiranui", "Sphinx", and "Toon" archetypes
"ST04-005 Queen" is particularly valuable when used in combination with your Leader to draw 3 cards and assemble the parts needed for transformation, while also moving the cards to be transformed into your trash.