2021-03-19 If your opponent discards a card while you control Leyline of the Void, abilities that check whether a card is discarded (such as Hollow One, or a madness ability of the discarded card) still work, even though that card never reaches that players graveyard
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There are also a few examples of much thicker Magic: the gathering novelty cards, such as the Display Commander which comes with newer commander decks
Like Grave Upheaval (and conveniently fitting in the same Simic decks), this card doesn't seem all that special at first glance, but once you've experienced locking down all your opponent's lands during each of his upkeeps, you'll understand
Eye of Ugin (optional, very pricey) If you already own one, its a monster here
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