The thing that you shouldn't do at a regionals in any circumstances is over extend. What is over extending? Over extending means that you see your in dominant postition so you decided to put more than half your eggs in the basket or cards. You have lets says you have 5 cards in hand including zombie master and you opponent has one face up gadget and a useless back row. In this case your probably saying i can't hit him for game this turn, but i don't think he could recover and that's were you wrong. Now you hit you opponent for a lot of damage discarding 3 cards from your hand to commit to swarming the field for massive damage. You opponent has only 2 cards in hand. You kill over the gadget and attack directly. Now you opponent draws and flips his face-down brain control with 3 cards in hand while you have 2 face up zombie masters and 2 cards in hand. He takes control of one zombie master, discards to special another, and summons a gadget. Now your screwed because you have 2 useless cards in hand and you've taken alot of damage. You finally concluded your going to lose and you do.
So what have you learned from all this? Don't put all your cards into something when you can't win that turn. One final example of this is my opponent has a face up dimensional fissure and a face-down monster and i have a irou, shogun shien, and grandmaster face up. He only has one card in hand and its a cauis the shadow monarch. In my hand i have 2 monster cards and no back row. So i attack for lots of damage and it's his turn. He draws brain control. He sacks my shien, removes my grandmaster, and attacks my irou. Now im shaking. I have 2 cards in hand which are monsters and top-deck another. I set a monster and say go. He then top decks a reinforcement of the army getting d.d warrior lady because he ran out of survivor. I again take another 2400 lp. I draw another monster and scoop up my cards.
So what have you learned? Not to over extended. You don't want to be pissed because you were trying to be to greedy. I've done it many times.

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