Dunno, though i dont need more than just one playset mat and others, so might be a waste to get more than one
Painful Choice (Spell card) Select five cards from your deck and show them to your opponent
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
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
The last thing you want is for you attack to be interrupted by a counterspell or instant speed removal
High-End Foils And Promos Early foils, judge promos, old promotional cards, and rare event cards can also be expensive