The Aristocrat requires you to have other creatures in play so as to negate the single toughness and be able to really abuse all aspects of the card
For budget-conscious players, Clarabelle effectively replaces the need for more expensive draw-based rares by consolidating your entire card-advantage engine into a single, high-willpower character that is difficult for opponents to remove without a dedicated action card
Not all Pokmon cards are created equal
Removal, well, removes your opponents cards
Owner's Pokmon are Pokmon cards which reference the specific trainer they belong to - generally a well known character from the anime and/or games
(1) Special Summon 1 Blue-Eyes monster from your Deck, GY, or banishment in Defense Position, but you can only Special Summon Blue-Eyes White Dragon with this effect if you do not control it, also you cannot Special Summon from the Extra Deck for the rest of this turn, except Dragon monsters