4-8 Player Commander Cube, draft 3-6 packs of 15 cards each, and build a truncated commander deck using a legendary creature from your pool.
8 5-color commanders are available (drafted separately):
Niv-Mizzet Reborn
Golos, Tireless Pilgrim
Ramos, Dragon Engine
Jodah, Archmage Eternal
Kenrith, the Returned King
Child of Alara
Jegantha, the Wellspring
Garth One-Eye