Not only is this effective at mitigating any battle damage you might have taken from combat (though that's also hard since Ni-Ni takes no battle damage and reflects damage back), but it blocks any combos your opponent might have been planning with their monster for their turn
Granted, Japanese media productions have a lot more leeway when presenting dark themes to children a luxury that western companies like 4Kids do not have
Painful Choice (Spell card) Select five cards from your deck and show them to your opponent
Why it's top-tier for Ruby : Play : Evasive pressure that scales
High-End Foils And Promos Early foils, judge promos, old promotional cards, and rare event cards can also be expensive
Its interesting that or planeswalker has become such common parlance on common cards, even in a core set that doesnt have an uncommon planeswalker like Chandra, Novice Pyromancer