Or the fine art of the force.
I was watching one of the more competitive players at my LGS play a Mordikar Skorne list and was mildly enlightened by him talking through his thought process while playing. He totally possessed a tool I was missing. In the same way a magician can force you to pick the card he knows, the Skorne player called his turn...
You will kill 5-6 swordsmen, 2-3 Accurii, and hurt (but not kill) the Rhinodon. He even called it out and watched as it all went according to plan. I came to realize I was missing a tool, the ability to "force".
Knowing pretty much at all times what your opponent can kill and knowing how to maximize on those losses (which for some casters is easier than others), was a new way of thinking about the game that I hadn't actively thought about yet. I am used to doing all the calculations separately (threat range is X, damage output is Y, etc.), but watching him basically dictate his opponents turn was a bit disconcerting.
All and all I know he is a bit out of my league (he has placed highly in several major events), but the glimpse into his mindset for a moment showed me the next level of the game that I was only vaguely aware of previously.
