The Champions of Kamigawa design team realized early in design that legends were a good fit for the set both flavor-wise and mechanically
M Rayquaza EX (Full Art) 105/108 This is Rayquazas most accessible Mega full art
It also led to arguments and time-wasting rulings by judges about such things as what exactly constituted a flip, how far it had to be above the table, whether it was actually touching something, and when cards could be moved around (supposedly, at least one tournament player attempted to cut his card into confetti so it would hit the whole table, although this is probably an urban legend.) As a result, they both ended up being banned in all formats, making Chaos Orb, Falling Star, and Shahrazad the only 3 cards that aren't ante cards, promo cards, or un-set cards that are banned in all formats
classical Japanese megalomania
So we had a mechanic that made people nervous and was causing a design issue combined with a dictum by Aaron that we needed to find a creature combat mechanic
Shattering Spree Shattering Spree is my weapon of choice when it comes to dismantling mana rocks, equipment and other nasties