Favor games with transparent RTP information and known variance
Next is another Wall, but which one
Most Expensive Pokmon Cards by Estimated Value Factors Affecting Pokmon Card Value Grading Professionally graded cards (PSA, Beckett, CGC) are more trustworthy and sell for higher prices
Limited cards are cards that have proven to be a problem, but are key players in various archetypes or popular deck strategies, and fully banning them would cause bigger, unintentional effects
During the Battle Step, if this card battles an opponent's monster (Quick Effect): You can target that opponent's monster
This card created headaches for so many players when it was in Standard, and eventually earned a ban