Then, on the next turn, you drop Karrthus, steal all of those Dragons, give them haste, and swing for a bunch of damage to someones face
Although you cant access any of the games powerful on-play effects when you search out a Pokmon via Nest Ball, you still get the benefit of having a Pokmon out and ready to evolve or use any Abilities that dont require they be used upon being played from your hand

C4 = HM01 Cut C5 = HM02 Fly C6 = HM03 Surf C7 = HM04 Strength C8 = HM05 Flash C9 = TM01 Mega Punch CA = TM02 Razor Wind CB = TM03 Swords Dance CC = TM04 Whirlwind CD = TM05 Mega Kick CE = TM06 Toxic CF = TM07 Horn Drill D0 = TM08 Body Slam D1 = TM09 Take Down D2 = TM10 Double Edge D3 = TM11 Bubblebeam D4 = TM12 Water Gun D5 = TM13 Ice Beam D6 = TM14 Blizzard D7 = TM15 Hyper Beam D8 = TM16 Pay Day D9 = TM17 Submission DA = TM18 Counter DB = TM19 Seismic Toss DC = TM20 Rage DD = TM21 Mega Drain DE = TM22 Solar Beam DF = TM23 Dragon Rage E0 = TM24 Thunderbolt E1 = TM25 Thunder E2 = TM26 Earthquake E3 = TM27 Fissure E4 = TM28 Dig E5 = TM29 Psychic E6 = TM30 Teleport E7 = TM31 Mimic E8 = TM32 Double Team E9 = TM33 Reflect EA = TM34 Bide EB = TM35 Metronome EC = TM36 Self Destruct ED = TM37 Egg Bomb EE = TM38 Fire Blast EF = TM39 Swift F0 = TM40 Skull Bash F1 = TM41 Softboiled F2 = TM42 Dream Eater F3 = TM43 Sky Attack F4 = TM44 Rest F5 = TM45 Thunderwave F6 = TM46 Psywave F7 = TM47 Explosion F8 = TM48 Rock Slide F9 = TM49 Tri Attack FA = TM50 Substitute Item Modifier Cheat code (English Version) 01 XX 7CCF Cheat Code (German Version) 01 XX 81CF How to use : Choose the appropriate rom version and replace XX with the desired item id

Its a competitive deck right out of the box though
Use a soft light and inspect both sides
Special Summon 1 "White Night Queen" from your hand, Deck or graveyard, ignoring the Summoning conditions