[6] For a 360-card cube, heres a good distribution: 250 cards, with 50 for each color 50 red, 50 green, 50 black, 50 white, 50 blue 50 multicolored cards 5 each for the 10 color pairs 30 artifacts If you include a mono-brown archetype, consider doubling this number (at least) and trimming on the individual colors, since anyone can draft colorless cards
But maybe a new approach can change my mind
Metamorphosis can be used not only to summon Thousand-Eyes Restrict but also with high level monsters to summon powerful fusions like Gatling Dragon, Ryu Senshi, and King Dragun
Brothers of Fire requires a stronger commitment to red, however, which might limit the decks you put it in
Why Are Pokemon Cards Rare
Ok Ezio Auditore da Firenze [Foil] #113 (Magic Assassin's Creed) Details All prices are the current market price