Blue Eyes Ultimate Dragon (alternate version) When you get to the part where you have to duel Kaiba to pass Ishizus test, defeat him and he will give you The Blue Eyes Ultimate Dragon
"D/D/D/D Dimensional King Arc Crisis", based on Leo
Blocks were eventually shelved after Wizards realized the Two-Block Paradigm was problematic for a lot of reasons, mainly because of a lack of reprints and issues with developing sets
Not only do these indicate each color pair's strategy, but they're also powerhouses in their respective decks
See also: Binder layout planner How should I organize Dark Explorers in a binder? For 207 cards (including reverse holos), a 9-pocket binder needs 12 double-sided pages and a 12-pocket binder needs 9 pages
Unlike other similar huge seven-casting cost flyers (Blizzard Elemental, anyone?), it gave you the mana on the turn you played it to save it