Midgame is when you drop heavy hitters like Arasta of the Endless Web to pump out tokens or Origin of Spider-Man to boost a creature

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If they dont have any sacrifice outlets (Gilded Goose, Witchs Oven) its better to let the Dragon resolve, and Gust it in response for the trigger, so they have to sacrifice a permanent, but wont draw a card
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Due to this cards high finishing potential it is always something aggressive decks are happy to play