If a twobert has 180 cards with 40 card decks a cube for 30 card decks should have 135 cards right?

Draft 4 packs of 8 if you have 4 people or grid draft all but one pack if you have 2.

Design Philosophies:

some stolen from Caleb Gannon's Powered Synergy Cube

• Different types of synergies in the different colors
• Decks that are built around a single card are more fine with 30 cards than with 40 since you are that much more likely to draw it
• No cards that run away with the game on their own (see Oko or Laelia)
• Avoid trinket text a much as possible
• Focus on card to card synergies over overarching themes
• Focus on individual color capabilities and the overlap between them over specific two color combinations
• Good fixing
• Good interaction
• A vague consideration of budget since I'm probably not proxying this
• No tokens outside the MH2 non-creature triplet (Clue, Food and Treasure), 1/1 Thopter artifacts with flying and "Karnstructs"
• No double-faced cards

Archetype Defining Cards aka The Reasons Why I Built the Cube: Baby Reanimator

Fair Tinker

Madness

Artifacts in Graveyards

Enchanting Food

The Glue