Because everything is better with Reckoning added to it. It's a Psychic deck. The point of it is to get out Beheeyem and Swoobat quickly, then use them to deal massive damage spread out over a wide range. They're bolstered by the best basics Psychic has to offer. Then Dusknoir comes out and starts to move all those damage counters in a way that is ideal to my goals.
Pokemon: 21
x2 Duskull: http://serebii.net/card/boundariescrossed/061.shtml -Needed for evolution. x2 Dusclops: http://serebii.net/card/boundariescrossed/062.shtml -Needed for evolution. x2 Dusknoir: http://serebii.net/card/boundariescrossed/063.shtml -As it says above, this guy's job is to move around the damage counters that Swoobat and Beheeyem left all over. Dusknoir is also helpful in taking down Psychic resists, which is helpful since Swoobat and Beheeyem have trouble with that. x3 Elgyem: http://serebii.net/card/noblevictories/055.shtml -Gets out basics. Needed for evolution. x2 Beheeyem: http://serebii.net/card/noblevictories/056.shtml -Syncronoise is a solid attack. A one for 20 that does 20 damage to every Pokemon on my opponent's bench that is the same type as the Defending Pokemon. Since most decks are made of one or two types, this should be damaging a fair amount of Pokemon. x2 Woobat: http://serebii.net/card/boundariescrossed/070.shtml -Needed for evolution. x2 Swoobat: http://serebii.net/card/emergingpowers/037.shtml -A one for 30 is nice but the main draw of this card is the large amount of damage dealt by Phat Sound (winner of the best Attack name). x2 Sigilyph: http://serebii.net/card/dragonsexalted/052.shtml -As always. Sigilyph is a must for every deck using Psychic energy. Its ability to prevent damage by EX cards is invaluable. x2 Mr. Mime: http://serebii.net/card/plasmafreeze/047.shtml -Swoobat and Beheeyem aren't bulky, so after the early game is done with I have to bench them. Dusknoir is bulky, but it is a prime target for attack. So I have to bench him as well. Mr. Mime makes sure these guys remain protected. x2 Mewtwo EX: http://serebii.net/card/nextdestinies/054.shtml -Well this one is a bit obvious. It's Mewtwo, why wouldn't I have it?
Trainers: 27
x4 Pokemon Communication: http://serebii.net/card/blackwhite/099.shtml -Gets me the Pokemon I want. x4 Professor Juniper: http://serebii.net/card/blackwhite/101.shtml -Drawing. x4 Pokemon Catcher: http://serebii.net/card/emergingpowers/095.shtml -Because best Trainer in the game. x4 Skyla: http://serebii.net/card/boundariescrossed/134.shtml -Gets back Trainers. x3 Ghetsis: http://serebii.net/card/plasmafreeze/101.shtml -Lass and drawing. x3 Super Rod: http://serebii.net/card/noblevictories/095.shtml -Gets back Pokemon and Energy, usually those discarded by Juniper. x2 Silver Mirror: http://serebii.net/card/megalocannon/069.shtml -Allows me to better deal with EX cards. x2 Iris: http://serebii.net/card/megalocannon/071.shtml -Increase damage output by a lot, especially in the late game. x1 Computer Search: http://serebii.net/card/boundariescrossed/137.shtml -Gets me the card I need.
Energy: 12
x12 Psychic