A Twobert based on David McDarby's MtGO "Live the Dream" cube.
2-color Archetypes:
-BW Lifegain Clerics
-GB Spider Spawning/GY interactions
-UG Flash
-UR Big Spells
-RW Artifact Aggro

Mono-Color Synergies
-G 5-Color Green
-B Sacrfice
-W Counters
-R Pingers
-U Wizards

Other color combinations are draftable, however they lack fixing and dedicated gold cards