If this is a 10, the last sold for this card was almost $10,000
Flavor Text "If powerstones are energy stored in material form, could we store matter as energy in the same way?" Rayne, research notes Number 108 Language English Legal Formats Commander, Historic, Legacy, Modern, Vintage Not Legal Formats Alchemy, Brawl, Competitive Brawl, Pauper, Pioneer, Standard, Timeless Rulings (10/4/2004) Any 'X' in the creature's cost is treated as zero
Cards that prevent your opponent from attacking, like "Gravity Bind" and "Thousand-Eyes Restrict", are very effective at this
Some scammers will sort through the cards and only return the less-desirable ones to the pack to sell
Take a look at the different groups of Fire Monsters in Yi-Gi-Oh!, so you can build a deck that supports your playstyle
Likewise, Spell and Trap Cards in the Monster Zones are treated as monsters (though prior to the Master Rule 2020 Revision, Trap Monsters that still treat themselves as a Trap Card after Summon took up both 1 Monster Zone and 1 Spell & Trap Zone at the same time)