This tournament looks like it's going to have a pretty narrow range of decks, considering 4/10 "six of sixes" are permanent shields, which no-one wants 6 of in a deck. I'm not seeing a deck with 6 eternities working very well either.
A bit confusing rules.
Make example decks,please.
Im not sure abouth :
deck must also contain exactly six unique cards (Mark Cards, Pillars, Pendulums, and 'six of sixes' included).
exactly six unique cards usually means there are six different cards in the deck, some with multiple copies.
An example deck might look like this
Hover over cards for details, click for permalink
4tc 4tc 52k 52k 52k 52k 52k 52s 52s 52s 52s 52s 52s 542 542 542 542 542 542 542 542 542 542 542 5f6 5f6 5f8 5f8 5f8 5f8 8po
6 unique cards, 6 aflatoxin (6 of 6)