Rules: Also known as 15 Card Singularity.

Draft 2 packs of 10. Build a deck with exactly 15 cards including the basics (unless you drafted Advantageous Proclamation, in which case 10-15). You do not lose if you cannot draw from an empty library, hence the card that the Cube is named after which has the rules text "If you would draw a card, you may skip that draw instead." Otherwise, you play Magic as normal (20 life, 7 card opening hand, normal mulligan rules).

This format is interesting in that you are attempting to maximize limited resources. This cube encourages deckbuilding creativity, but broadly the two archetypes per color are:
White: Prison - Taxes
Blue: Combo - Tempo
Black: Control - Reanimator
Red: Combo - Aggro
Green: Ramp - Recursion

Hope you enjoy! It was a blast to design.