For a proactive playstyle, you have the inherent benefit of being the aggressor. Applying pressure to your opponent leaves them less room to apply their own pressure and less time to execute their win condition, so that's great. On top of that pressure can often itself be used to alleviate pressure from your opponent through making trades. That's not something you can strictly do due to lanes, but the lanes conversely make every proactive tool a reactive one as well since they can just instantly be put into a trade. As such, most proactive cards have inherent strong flexibility. So why play reactively? Actually, there's no inherent reason to do it. Playing slower than your opponent gives them more time to do what they need to do, and while you can transition into being proactive later that's not going to happen without some other benefits since you eventually run out of answers. As such, reactive play is, by design, given its own additional advantage through cost. Reactive cards cost less than what they're designed to answer. This enables you to, at least in theory, be able to deal with threats and do something else, which in most card games is drawing so you can have a more flexible hand and find more answers, and it's important to note that for this to happen it needs to be meaningfully cheaper. Answering something for 1 or 2 or even 3 less doesn't matter at all if there's nothing else you can meaningfully do with the excess. It's an important reward to incentivize doing something other than applying as much pressure as you can as fast as you can. A/ Fill in the blanks with ONE WORD ONLY to complete the summary of the passage, using words from the passage. The most preferred playstyle must be proactive because you are granted the built-in advantage of an (1)_______. A proactive playstyle helps you reduce (2)________ via trading; and can be reactive due to the system of (3)_______, which enables trade for every tool you have. Playing reactively is currently out of the question because you can't (4)_______ from being reactive to being aggressive without certain advantages, and giving opponents more time in return. Therefore, a reactive tool, by design, should cost (5)__________ less in order to be able to deal with threats; and even such dramatic changes won't matter if there's nothing you can do after that.