Looking at a few spells and traps that caught my eye:
First off we got Deep Dark Trap Hole:
When a Level 5 or higher Effect Monster(s) is Special Summoned: Banish that monster.
Pretty good side against many decks (Samurai, Blackwing, Plants, Machina for example) since most decks have quite a few monsters that fall under this category. Eliminates the vast majority of synchros, as well as popular boss monsters. However, it doesn't negate the summon, so watch out for those trigger effects.
Next up we have Extra Gate:
Declare a Level from 1 to 12: Your opponent banishes 1 monster from their Extra Deck with the same Level as the declared Level. If there is no monster with the declared Level, then discard 1 card from your hand.
Really nice against decks with a full extra deck, especially since it doesn't hold back against either Synchros or Fusions. Gets rid of Hero fusions and also cuts down opponent's synchro options if planned well.
That's all I got for now, since it's hard to pick specifics in this wonderful set. Anyways, be back later with a tourney report from this past weekend...got a busy week.