chaotic card sleeves Mtg Sleeves, Chaos Descends Tcg Sleeves, Matte or Foil, 66x91, Gift for Gamers Chaos Ruler, the Chaotic Magical

Mox Opal And of course we have Mox Opal as not just the best colorless metalcraft card, but the best metalcraft card in general

Emboar (013/086) From White Flare, Emboars ability Inferno Fandango allows you to attach fire energy from your hand to your Pokemon as often as you like

(2021-07-23) If Asmodeus the Archfiend leaves the battlefield before you activate its last ability, any cards exiled by its replacement effect remain exiled face down for the rest of the game

Such is the case with the October Superdrop, a collection of six discrete Secret Lairs

The Energy required to use the attack

That's the secret sauce right there