
Xanathar, Guild Kingpin
4UB
Legendary Creature - Beholder
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.
Illus.
Kieran Yanner
5/6
il rigole pas trop Xanathar. Avec ce wording je ne vois rien qui empêche d'enchaîner les cartes du deck de l'adversaire

Purple Worm
5GG
Creature - Worm
This spell costs 2 less to cast if a creature died this turn.
Ward 2 (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays 2.)
Underground civilizations maintain magical barriers around their settlements to deter these monsters.
8/7

Sphere of Annihilation
XB
Artifact
Sphere of Annihilation enters the battlefield with X void counters on it.
At the beginning of your upkeep, exile Sphere of Annihilation, all creatures and planeswalkers with mana value less than or equal to the number of void counters on it, and all creature and planeswalker cards in graveyards with mana value less than or equal to the number of void counters on it.