When Acererak the Archlich enters the battlefield, if you haven't completed Tomb of Annihilation, return Acererak the Archlich to its owner's hand and venture into the dungeon.

Whenever Acererak the Archlich attacks, for each opponent, you create a 2/2 black Zombie creature token unless that player sacrifices a creature.

Target creature's base power perpetually becomes 0.

: Add two mana of any one color.

Nightbound (If a player casts at least two spells during their own turn, it becomes day next turn.)

Horrors you control have menace.

Whenever a Horror you control deals combat damage to a player, that player mills that many cards.

At the beginning of your end step, choose target artifact or creature card in an opponent's graveyard that was put there from their library this turn. Put it onto the battlefield under your control.

Whenever another Cleric enters the battlefield under your control, you gain 1 life.

Whenever you gain life for the first time each turn, put a +1/+1 counter on Cleric of Life's Bond.

Flying

At the beginning of combat on your turn, target creature you control gets +1/+0 and gains vigilance until end of turn.

Each player loses 2 life. You draw two cards.

Distribute three +1/+1 counters among one, two, or three target creatures you control.

Trample

Whenever a source you control deals 5 or more damage to a player, draw a card.

Each opponent faces a villainous choice — They exile cards from the top of their library until they exile a nonland card, then you may cast that card without paying its mana cost, or that player exiles the top four cards of their library and Ensnared by the Mara deals damage equal to the total mana value of those exiled cards to that player.

Destroy target creature or enchantment an opponent controls. You lose life equal to that permanent's mana value.

Forsaken Miner can't block.

Whenever you commit a crime, you may pay . If you do, return Forsaken Miner from your graveyard to the battlefield. (Targeting opponents, anything they control, and/or cards in their graveyards is a crime.)

Haste

Whenever you cast a noncreature spell, Frenzied Devils gets +2/+2 until end of turn.

Flash (You may cast this spell any time you could cast an instant.)

Reach

When Great Oak Guardian enters the battlefield, creatures target player controls get +2/+2 until end of turn. Untap them.

Flying

: Hellkite Punisher gets +1/+0 until end of turn.

Kicker (You may pay an additional as you cast this spell.)

Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. If this spell was kicked, sacrifice that creature at the beginning of the next end step.

Reach

Pack tactics — Whenever Intrepid Outlander attacks, if you attacked with creatures with total power 6 or greater this combat, venture into the dungeon. (Enter the first room or advance to the next room.)

Partner with Laurine, the Diversion (When this creature enters the battlefield, target player may put Laurine into their hand from their library, then shuffle.)

Lifelink

Whenever a creature an opponent controls dies, you gain 1 life and create a Blood token. (It's an artifact with ", , Discard a card, Sacrifice this artifact: Draw a card.")

Whenever you cast a noncreature spell, Lambholt Ravager deals 2 damage to each opponent.

Nightbound (If a player casts at least two spells during their own turn, it becomes day next turn.)

Whenever Momentum Rumbler attacks, if it doesn't have first strike, put a first strike counter on it.

Whenever Momentum Rumbler attacks, if it has first strike, it gains double strike until end of turn.

As an additional cost to cast this spell, you may sacrifice one or more creatures. When you do, copy this spell for each creature sacrificed this way.

You draw a card and you lose 1 life.

Flying

Fire Breath — When Red Dragon enters the battlefield, it deals 4 damage to each opponent.

When Runeforge Champion enters the battlefield, you may search your library and/or graveyard for a Rune card, reveal it, and put it into your hand. If you search your library this way, shuffle.

You may pay rather than pay the mana cost for Rune spells you cast.

Kicker (You may pay an additional as you cast this spell.)

When Scorch Rider enters the battlefield, if it was kicked, it gains haste until end of turn.

Choose any number of target creatures, planeswalkers, and/or players. For each of them, exile the top card of your library, then Soulfire Eruption deals damage equal to that card's mana value to that permanent or player. You may play the exiled cards until the end of your next turn.

Exploit (When this creature enters the battlefield, you may sacrifice a creature.)

When Stitched Assistant exploits a creature, scry 1, then draw a card. (To scry 1, look at the top card of your library, then you may put that card on the bottom of your library.)

Flying

Spells your opponents cast that target Terror of the Peaks cost an additional 3 life to cast.

Whenever another creature enters the battlefield under your control, Terror of the Peaks deals damage equal to that creature's power to any target.

Kicker and/or (You may pay an additional and/or as you cast this spell.)

As Urborg Lhurgoyf enters the battlefield, mill three cards for each time it was kicked.

Urborg Lhurgoyf's power is equal to the number of creature cards in your graveyard and its toughness is equal to that number plus 1.

: Add one mana of any color.

Daybound (If a player casts no spells during their own turn, it becomes night next turn.)