What are the absolute staples for each color
Nice card flow attached to Treasure making
Color identity, which owes its origins to the fertile mind of former Rules Manager Matt Tabak, sprung from the fact that Memnarch, along with Bosh, Iron Golem
7 Balmor, Battlemage Captain Easy Buffs For The Whole Board 2 Mana Cost in Izzet (Blue/Red) Creature Balmor, Battlemage Captain is the quintessential Izzet card, enabling a spell-slinging, evasive, creature-heavy playstyle
That's a lot of support for an archetype, Liberator, Urza's Battlethopter is probably the strongest of the 3, but this lets you dump out Eldrazi on your opponents end step and then attack immediately, which is pretty dangerous
I considered restricting non-basic lands too, but that meant my five color deck would simply not even work a substantial number of games