The following rulings focus on what it means if your life total can't change Spells and abilities that would normally cause you to gain or lose life still resolve while your life total can't change, but the life-gain or life-loss part simply has no effect
"Pyramid Review: Pokemon Trading Card Game"
It might be the color pair I have my highest win rates with (with some decks, at least), and its also, incidentally, a color pair that has historically been less popular, less powerful, and very narrow
Marvel Snap may have significantly more characters to choose from - over 80,000 believe it or not - but since each character only appears once, albeit with different artwork variants, there are only 257 cards available
Even then, I think it's OK to sometimes play a higher-powered list so long as it's not a constant problem