Special Guests

Creature — Zombie

Other Zombie creatures get +1/+1.
{1}{B}, {T}: Return target Zombie card from your graveyard to your hand.

Lord of the Undead

Secret Lair Countdown

Legendary Creature — Demon

Landfall — Whenever a land you control enters, you may have target player lose 3 life. If you do, put three +1/+1 counters on Ob Nixilis.

Ob Nixilis, the Fallen

Secret Lair Drop

Legendary Creature — Beholder

Whenever you attack a player, tap target creature that player controls and goad it. (Until your next turn, that creature attacks each combat if able and attacks a player other than you if able.)
Whenever an opponent attacks another one of your opponents, you and the attacking player each draw a card and lose 1 life.

Karazikar, the Eye Tyrant

Sorcery

Council's dilemma — Starting with you, each player votes for time or money. For each time vote, take an extra turn after this one. For each money vote, choose a permanent owned by the voter and gain control of it. Exile Expropriate.

Expropriate

Legendary Planeswalker — Narset

Each opponent can't draw more than one card each turn.
−2: Look at the top four cards of your library. You may reveal a noncreature, nonland card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

Narset, Parter of Veils

You control target player during that player's next turn. Exile Worst Fears. (You see all cards that player could see and make all decisions for them.)

Worst Fears

Artifact Creature — Phyrexian Construct

At the beginning of your upkeep, each player draws a card.
Whenever an opponent draws a card, that player loses 1 life.

Scrawling Crawler

Artifact

As long as this artifact is untapped, players can't untap more than one land during their untap steps.