Magic at its purest form from my personal experience. No funny mechanics, wordy cards, or gimmicky set art, and no rarity restrictions.
Core Mechanics
Gruul - Stompy and Lands
Izzet - Spells and Tempo
Dimir - Threshold Midrange and Control
Azorius - ETB Control, Flyers
Rakdos - Oppression and Sacrifice
Golgari - Graveyard Midrange
Selesnya - Tokens and Counters
Simic - Stompy and Lands
Boros - Go-Wide Aggro
Orzhov - Lifegain and Sacrifice