All that glitters is in fact gold. Test your skills with only multicolor cards.
SPECIAL RULES
All Players Receive a Cryptic Spires for deck building. They may declare its color at the presentation of decks.

OVERVIEW
Every card in this cube is Multicolor or needs more then one color to receive full benefit of the card. Think of 2-color pairs as your colors and themes will bleed into the neighbors of 2-color pairs

UW Azorious - Blink and Bounce
UB Dimir - Mill, self and opponent
RB Rakdos - Sacrifice
RG Gruul - Trample matters
GW Selesnya - Enchantments and Auras
WB Orzhov - Reanimation
UR Izzet - Spell Slinger
BG Golgari - Graveyard Matters
WR Boros - Go Wide
UG Simic - +1/+1 Counters

Three color pairs will help themes associated with their three color pairs. For example Mardu cards will be good for sacrifice, go wide, or reanimate decks.