Grub can't have all the good cards
Every time an opponent casts a spell, theyll have to pay one extra mana or let you draw a card
Uchuulon is just, uh, really freaking weird
Well, perhaps they agree that there is a point where a deck can have too many Pain Lands and Fetch Lands freeing up a few slots for Filter Lands and the strong mana fixing they provide at the cost of 0 life
Sets that primarily take place there : Innistrad , Dark Ascension , Avacyn Restored , Shadows over Innistrad , Eldritch Moon , Innistrad: Midnight Hunt , and Innistrad: Crimson Vow Planeswalker natives (with planeswalker cards) : Arlinn, Sorin, and Tibalt Innistrad is a plane inspired by the horror genre, especially the subset of gothic horror