Cloned from Nongreen Grid: Invitational Limelight Revisited ("Twobert-adjacent")
Designed to drafted head-to-head via an even, fourteen-to-eighteen 3x3 grids. Read more on 1-versus-1 grid drafting with four colors from Jason Waddell's article on the format: http://www.channelfireball.com/home/grid-tenchester-and-cutting-a-color-from-the-cube/
(I haven't drafted this "Twobert-style", but will try it in paper at some point. Details from Ryan Overturf's article: https://articles.starcitygames.com/premium/the-proper-way-to-do-two-player-cube-drafts/)
(One color, green, is not included to increase the probability of relevant cards for each player in any one 3x3 grid. Zero-to-fifty-four cards, in multiples of eighteen, are to be randomly removed before each draft; more cards removed will increase the drafting difficulty (but generally make deck building easier). Testing has primarily occurred with 16 grids - thirty-six cards randomly removed prior to drafting.)
This card population aims to evoke nostalgia of the mid-2000s Extended format with lower-velocity threats and splashy spells or card interactions. There are no planeswalkers, the power/toughness of creatures less than mana value '4' are low and creature type does not impact gameplay. A high density of card advantage (mostly as 2-for-1s) in all colors propels many games into the mid-to-late turns. There are multiples (2-to-4) of integral and format-glue cards.
There are 4 primary color pairs each supporting two main stylistic approaches:
3-to-4-color decks may play similarly to Mardu Pyromancer or Next-Level Blue (and leverage power over synergy) or simply splash a card or two.
Did I mention that seven Magic Invitational Winners' cards are included (and one World Champion Winner's card)? 0_0