540 card cube with no card worth more than $3 (so that it can be played without sleeves - but I went ahead and got the sleeves).

The base is 3 of each common changeling (about two per pack). From there, I add "lords" of various types to make the games interesting and to push tribal themes.

White - Rebels / Humans / Cleric / Cycling / Lifegain / slivers
Blue - Illusions / Giant / Merfolk / Rogues / Flashback / self-mill
Black - Zombies / Elves / Cleric / Rogues / Recursion / Lifegain
Red - Goblin / Giant / Shaman / Beast / Cycling / Flashback / slivers
Green - Elves / Shaman / Beast / Humans / Lifegain / self-mill
Artifact - Myr

I want this cube to be accessible for kids and other people not deep into Magic, so I am trying to avoid unneeded complexity (no double-faced cards, avoiding a keyword for only one card on the cube, etc.).