What this means that if you play Pendulum monsters, you lose 2 spell and trap zones, while if you play no Pendulum monsters, you can use all 5 spell and trap card zones (just like before)
This special Trap Card lets you: Place a chessboard Field Spell from your hand, Deck, or Graveyard, to the field, to get you started, AND Special Summons a Level 2 or 7 chessman (pawn or knight) to the Extra Monster Zone, AND Places 1 chessman from your Extra Deck in your Spell & Trap Zone, AND If your opponent goes first, you can activate this Trap from your hand during their Standby Phase
Some players also use it in frog decks for flavor reasons, even though Sab-Sunen doesnt have the frog creature type
High Visibility Bags High visibility backpacks and gear bags.
For my personal tastes, I would be scouring my rare binders for copies of Auratouched Mage, Eldrazi Conscription, Gigantiform, and Starfield of Nyx to start swapping out any less than ideal reprints