This is a cube to evoke a badass forbidden realm of fantasy. It features five main archetype each represented by a shard or wedge. Features in brackets are things that aren't really represented yet.

Dragons (Temur) - Ramp, Dragon Creatures, [Treasure Tokens]
Dungeons (Jund) - Reanimation, Madness, monsters, Slow inevitable value
Relics (Esper) - Artifact synergies
Heroes (Bant) - Equipment matters, Modify, buffing single creatures
Armies (Mardu) - Payoffs for going wide