All the time - the graveyard is just another library to me.
Sometimes, but the graveyard is not a big resource for me. I'm more likely to reuse cards from play to my hand and back.
What's a graveyard? Wherever the cards come from, there's a few that I must have - and my foes must not see coming. I'm more likely to dig through my library than my graveyard for them.
"My enemy is undone by his overconfidence! Wading through the muck and mire, I rally the forces at my disposal - those he THOUGHT he could dismiss as defeated - and destroy him in a gory apocalypse!"
"My enemy and his forces line the horizon, ready to crush the last of my resistance - or so he thinks! Just as he steps forward to deliver the coup-de-grace, there is the sound of empires toppling - as my empire arises. Figuratively or literally, the cavalry has ridden in and turns what appeared to be a desperate last stand on my part to a total rout of my enemy!"
"I have taken the high ground and fought the good battle, but all appears lost - there is no way out, and the tides of war are coming to sweep me away. Just at that moment, the clouds part in the heavens, and the light breaks forth - the powers have declared my victory despite the raging battle, and my enemy drops to his knees! All his powers and forces are for naught - whatever he may bring to bear, he has been defeated!"
Many of my cards have value on their own, but they all tend to work together as a team as well- and are more than the sum of their parts. There are a few points of weakness and little that can stop me once I'm going.
I can use quite a few different cards to achieve my aims, but I must be careful as my strategy can take time to accomplish and is vulnerable to the machinations of my opponent- at least until my plans come to fruition, at which point I am nigh unstoppable! I have a core of cards that I use- the remainder of my deck is there to support and defend it.
Only a few cards contribute to the most glorious victories my decks can achieve, and I cannot always rely on chance to give me what I need - my decks can either still win without that core and frequently do, or the other cards contained are there to give a chance a hand when needed to ensure I not only get what I need when I need it but can put them on the field and give me my victory.
Land- without it, there is no mana, and that's needed for almost everything.
The Library/Graveyard- This is where it all starts and where all your spells and resources come from.
The Hand - Spells, and resources come through this point in order to be used or manipulated.
They are all useful to the right player - an opponent must be denied them all.
I prefer to select threats that my opponent attempts to field and either prevent him from casting them or bending those threats to my will and using them against him.
I want to deny my enemy the power to generate mana to fuel his spells, leaving him with a hand full of useless cards that he must inevitably discard.
I want to deplete my opponent's arsenal, perhaps making him take harm in the process until he runs out of options and inevitably loses the game.
I know that taking out individual threats is not enough - my aim is to establish a condition where my opponent literally cannot do anything to harm me, while I can either wait for him to die off or act with impunity myself.
"Dr. Jones. Again we see there is nothing you can possess which I cannot take away."
"Come off it, Mr. Dent -- you can't win, you know. You can't lie in front of the bulldozers indefinitely." "I'm game. We'll see who rusts first!"
"Take my love, take my land - Take me where I cannot stand..." Sure!
"We're going to empty your memory as we might empty your pockets..."
I grind my opponents down, removing their options until they lose literally by having nothing left to do.
I am always in control of the game - my opponent cannot make a move without my permission, and all the moves they make are to my ultimate benefit.
If my foes attempt to stand their ground before me, I'll leave them no ground to stand on. If they attempt to go to the ground to avoid me, they'll find themselves in the same situation.
Those who stand against me invariably die or concede in frustration as my subtle magics render them totally impotent to act against my will.
The bigger and beefier, the better - I want them to be picking bits of my foe from between their toes!
Give me a fast horde - I want to sweep across the steppes like a sorcerous Ghengis Khan with my hordes brushing aside all opposition!
Creatures are alright, but they're there to keep my foes at bay until I can blast them! "Some call me... Tim?"
A fast horse underneath me, the wind in my hair, and the true ability to answer "Oh, yeah? You and what army?" with the words "This one!"
I'm riding down the road, a powerful beast between my legs (okay, get your mind out of the gutter right now), and I feel a speed bump in the road. I look back behind me and see the remains of my would-be foe pulped into a bloody smear and wonder just who was that?
The best thing in life is hanging with my friends for a good bbq. My enemy? He's the guest of honor! Does anyone want a rib?
I have lots of friends. Lots and lots of them. And none of them like you. Never let it be said that I'm not sporting - I'll even give you a head start!
I only have a few friends - don't seem to have the knack. But isn't this nice? I don't have any enemies at all... not anymore.
I have a few friends. What? Can't you see them? Hey, Flint - come over here and let me introduce you. No - that's not a mountain-moving - hey! Come back here!