I really gained a lot of tips and am also now looking at Yugioh from a different aspect after reading Micheal's Death Aspect blog. I've picked up 2 cards which are categorized under "I win" and that can fit into a single deck: Limiter Removal and Ultimate Offering. Limiter Removal is mentioned to be ban worthy but personally, I think not as Yugioh may be designed to be a game where it is possible to make a comeback even from the brink of losing. Just look at the anime battles!
With either of the 2 above mentioned cards and aftering clearing opponent's field/backrow:
- You only need an Ultimate Offering and a Gadget to loop into an XYZ/gadget swarm.
- You only need a Limiter Removal and 4000 worth of attack points on the field.
I believe Ultimate Offering will be affected by the ban list, probably semi-limited. 3 "I win" cards are still 3 "I win" cards.
Side-tracking: I managed to build "almost-completed" Machina Gadgets and Blackwings after doing side quests in DS Yugioh WC 2011. Still waiting to build the Agent deck! A tip about Turbo Duels, you only need to deal 7200 damage and the Speed World 2 field spell first effect can finish the job for you. Likewise, beware of dropping to 800 lifepoints.