Modeling cards as independent and linear is a vast vast oversimplification. It doesn't account for card synergy, exhausting your opponent's counters, managing y

Modeling cards as independent and linear is a vast vast oversimplification. It doesn't account for card synergy, exhausting your opponent's counters, managing your mana curve, managing your hand size, etc. For example, Shadowstep is an alright card... until you combine it with Leeroy Jenkins. Then it's 6 damage for 2 mana, and basically the reason Miracle Rogue decks exist. Linear and independent is a reasonable place to start, but nowhere near the goal.