Xanathar, Guild Kingpin (Ampersand Promo) [Dungeons & Dragons: Adventures in the Forgotten Realms Promos] Plains Island If they say yes

If they say yes

Occasionally a member of the Institute of Arcane Study acquires a taste for worldly pleasures

{T}: Tap target creature

you may pay {r}{r}

Xanathar, Guild Kingpin (Ampersand Promo) [Dungeons & Dragons: Adventures in the Forgotten Realms Promos] Plains Island If they say yesSet: Dungeons & Dragons: Adventures in the Forgotten Realms 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.