Synchro Cat

Cat Synchro (also known as Synchro Cat), is a deck in which uses the card Rescue Cat to special summon tuners quickly. The deck is well known for it's OTK, which can be done as follows: Cold Wave/Giant Trunade/Heavy Storm > Summoner Monk > Summoner Monk > Rescue Cat > X-Saber Airbellum x2 > Dark Strike Fighter x2 > Attack directly with both, then tribute both for the OTK. Cold Wave/Giant Trunade/Heavy Storm > Summoner Monk > Summoner Monk > Rescue Cat > X-Saber Airbellum x2 > Arcanite Magician & Dark Strike Fighter > Blow up any defenses, then attack directly. As you can see, the combo only needs 3 cards, which is a small amount of cards for a OTK. The deck is also fairly cheap, probably around the same budget of Plants if not cheaper. Synchro Cat is also very flexable, being able to make a Dark variant to a Earth variant which also helps its card variantion.

Sample of a Standard Deck List: Monsters x20 1 Dark Armed Dragon 1 Gorz the Emissary of Darkness 1 Cyber Dragon 3 X-Saber Airbellum 2 Rose, Warrior of Revenge 1 Snipe Hunter 1 Grand Mole 2 Neo-Spacian Dark Panther 1 Sangan 2 Summoner Monk 1 Plaguespreader Zombie 2 Rescue Cat 2 Ryko, Lightsworn Hunter Spells x13 3 Book of Moon 1 Brain Control 2 Cold Wave 1 Giant Trunade 1 Heavy Storm 2 Mind Control 1 Monster Reborn 2 Pot of Avarice Traps x7 2 Bottomless Trap Hole 1 Crush Card Virus 2 Limit Reverse 1 Mirror Force 1 Torrential Tribute Extra Deck x15 1 Chimeratech Fortress Dragon 1 Red Dragon Archfiend 1 Colossal Fighter 1 Thought Ruler Archfiend 2 Stardust Dragon 3 Dark Strike Fighter 2 Arcanite Magician 1 Black Rose Dragon 1 Goyo Guardian 1 Gaia Knight, the Force of Earth 1 Magical Android