Xanathar, Guild Kingpin [Dungeons & Dragons: Adventures in the Forgotten Realms Prerelease Promos] Human Noble you may cast noncreature spells

you may cast noncreature spells from among those cards without paying their mana costs

In just one night

Set: Diamond & Pearl: Majestic Dawn Type: Special Energy Rarity: Uncommon

If a creature an opponent controls attacks

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Xanathar, Guild Kingpin [Dungeons & Dragons: Adventures in the Forgotten Realms Prerelease Promos] Human Noble you may cast noncreature spellsSet: Dungeons & Dragons: Adventures in the Forgotten Realms Prerelease Promos Type: Legendary Creature Beholder Rarity: Mythic Cost: {4}{U}{B} At the beginning of your upkeep, choose target opponent. Until end of turn, that player can't cast spells, you may look at the top card of their library any time, you may play the top card of their library, and you may spend mana as though it were mana of any color to cast spells this way.