While there are solid cards like Cut Your Losses for Bruvac mill or Hypnotic Grifter as a mana outlet in a self-mill deck, theyre a little niche and otherwise not going to add too much to your collection
Such decks tend to cost around $15 each
I'm even in blue so I'd have access to Fabricate to go get a missing combo piece for this artifact-based combo
Lore: While you control "Z-Warrior: Low-Class Saiyan Goku", "Z-Warrior: Saiyan Prince Vegeta", "Z-Warrior: Gentle Warrior Gohan", "Z-Warrior: Future Warrior Trunks", or "Z-Villain: Perfect Warrior Cell": Each time it is not destroyed by battle, it gains 300 ATK
Bilbo, Retired Burglar is perfect for this, as a 1/3 will slip past bigger blockers, and Bilbo even has a combat damage trigger on an opponent, creating a Treasure token