pokemon ex battle deck rare cards Pokémon™ and Energy cards Pokemon Trading Cards - EX

I wonder what made them put so much effort into this idea this one time and why theyve never done anything comparable ever again

send both monsters to the Graveyard, then Special Summon 1 Xyz Monster from your Extra Deck, except a "Number" monster, whose Rank is equal to, or 1 less than, the combined original Ranks of those 2 Xyz Monsters, and if you do, attach this card to it as an Xyz Material

Portuguese Necromante Infrnico Quando este card for Invocado por Invocao-Normal: coloque este card em Posio de Defesa

Double rare card: 1 in 6 packs Ultra rare card: 1 in 15 packs ACE SPEC: 1 in 20 packs Illustration rare: 1 in 13 packs Special Illustration rare: 1 in 86 packs Hyper rare: 1 in 129 packs