One of the joys of any trading card game or collectible card game (also known as TCGs and CCGs) is that you can collect cards and build your own decks from them
I didn't reflect that much on the name change, but it was recently pointed out to me on this blog that sphere of annihilation was an artifact in D&D made famous by the 1978 module Tomb of Horrors, and it is possible that they changed the name before print to avoid any conflicts regarding intellectual property
This is the quickest identifier of fake cards as the real Pokemon font is quite distinctive and hard to replicate
Once per turn: You can destroy 1 monster in your hand or field, and if you do, send 1 "Doll Monster" card from your Deck to the GY, also you cannot Special Summon monsters from the Extra Deck for the rest of this turn, except Xyz Monsters
The Underground Sea is a versatile Land card illustrated with a mystical seascape that can be used as either an island or a swamp, depending on the players current needs