Naturally, its incredibly unusual to find a card back thats holographic because, in a TCG or CCG, its important that all card backs look exactly the same, regardless of what set they come from or what variant of card they are
For many of the most powerful cards in the game, their power level is balanced out by being extremely expensive to cast (meaning you cant cast them until the late-game), or forcing players to make another big sacrifice to bring it into play
Build choice adventures Branching stories on a visual canvas Map scenes, connect choices, track resources, and publish interactive fiction people can actually play
change it to face-up Attack Position, and if you do, it loses 600 ATK
Others are static abilities that give creatures abilities or power and toughness increases as long as two or more nonland permanents entered the battlefield under your control that turn