HumanSt
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Sometimes, you don't need much; one or two spells are enough to resolve the situation. It's pointless to hit ten demons with Earth Shock; lightning will suffice. It's like using a cannon to shoot at sparrows; you'll kill them, but you'll waste mana. It's better to conserve mana, which is also very important. Of course, at a high level, you can't upgrade much, but you can buy it all; the main thing is to have the money.