At the beginning of each end step, put a slime counter on each creature you don't control.

Creatures you don't control get -1/-1 for each slime counter on them.

Whenever a creature you don't control with a slime counter on it dies, create a 1/1 black Slug creature token.

, Sacrifice a Slug: Draw a card.

Morbid — When this creature enters, target creature an opponent controls gets -1/-1 until end of turn. If a creature died this turn, that creature gets -13/-13 until end of turn instead.

Devoid (This card has no color.)

Target player reveals their hand. You choose a card from it with mana value 3 or greater and exile that card.

Secret council — Each player secretly votes for a creature you don't control, then those votes are revealed. For each creature with one or more votes, put that many stun counters on it, then tap it. (If a permanent with a stun counter would become untapped, remove one from it instead.)

Enchant creature without flying

Enchanted creature can't attack or block, and its activated abilities can't be activated.

Search your library for a basic land card, reveal it, put it into your hand, then shuffle.

Delirium — If there are four or more card types among cards in your graveyard, instead search your library for a creature or land card, reveal it, put it into your hand, then shuffle.

When this enchantment enters, draw three cards.

Whenever you cast a spell, you lose 1 life.

When this enchantment becomes the target of a spell or ability, sacrifice it.

Enchant creature

All damage that would be dealt to enchanted creature is dealt to its controller instead.

Treacherous Terrain deals damage to each opponent equal to the number of lands that player controls.

Basic landcycling (, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.)

Target opponent reveals their hand. You may put a creature card from it onto the battlefield under your control. That creature gains haste. Sacrifice it at the beginning of the next end step.

Threshold — As long as seven or more cards are in your graveyard, this creature gets +2/+2 and has "When this creature dies, you lose 4 life."

, Sacrifice this artifact: Roll a d20.

1 | Trapped — You lose 3 life.

2–9 | Create five Treasure tokens.

10–19 | You gain 3 life and draw three cards.

20 | Search your library for a card. If it's an artifact card, you may put it onto the battlefield. Otherwise, put that card into your hand. Then shuffle.

Dash (You may cast this spell for its dash cost. If you do, it gains haste, and it's returned from the battlefield to its owner's hand at the beginning of the next end step.)

Whenever this creature attacks, target creature you control gets +1/+1 until end of turn.

Flying

Whenever Treva deals combat damage to a player, you may pay . If you do, choose a color, then you gain 1 life for each permanent of that color.

Whenever a creature you control enters, draw a card if its power is 3 or greater. Otherwise, put two +1/+1 counters on it.

As long as this artifact is untapped, each spell that would cost less than three mana to cast costs three mana to cast. (Additional mana in the cost may be paid with any color of mana or colorless mana. For example, a spell that would cost to cast costs to cast instead.)

Until end of turn, creatures you control get +1/+1 and gain trample and infect. (Creatures with infect deal damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

Sacrifice a land: Prevent the next 2 damage that would be dealt to any target this turn.

This creature can block an additional creature each combat.

Embalm (, Exile this card from your graveyard: Create a token that's a copy of it, except it's a white Zombie Human Warrior with no mana cost. Embalm only as a sorcery.)

Create a 3/3 green Elephant creature token.

Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)

Haste

When Tuktuk the Explorer dies, create Tuktuk the Returned, a legendary 5/5 colorless Goblin Golem artifact creature token.

Choose up to three target cards in graveyards. The owners of those cards shuffle them into their libraries. You gain 2 life.

Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Creatures your opponents control get -2/-0 until end of turn.

Tuvasa gets +1/+1 for each enchantment you control.

Whenever you cast your first enchantment spell each turn, draw a card.

: This creature gains deathtouch until end of turn.

Flying, vigilance

When this creature enters, return to your hand all cards in your graveyard that were put there from the battlefield this turn.

Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

Double strike (This creature deals both first-strike and regular combat damage.)

Whenever this creature attacks, flip two coins. If both coins come up heads, this creature gains double strike until end of turn. If both coins come up tails, this creature gains menace until end of turn.

Flying, menace, haste

Whenever this creature attacks, draw two cards.

All Sliver creatures have menace. (They can't be blocked except by two or more creatures.)

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)

I, II — Mill three cards. Then you may exile a creature or enchantment card from your graveyard. If you do, create a 2/2 black Zombie creature token.

III — You gain X life and scry X, where X is the number of Zombies you control.

Lifelink

At the beginning of each of your postcombat main phases, you may pay X life, where X is the number of opponents that were dealt combat damage this turn. If you do, draw X cards.

Partner (You can have two commanders if both have partner.)

Whenever one or more Elves you control attack, they gain deathtouch until end of turn.

Each creature you control has "Whenever a mana ability of this creature resolves, put a number of +1/+1 counters on it equal to the amount of mana this creature produced. This ability triggers only once each turn."

Vigilance, menace

Descend 8 — : Return this card from your graveyard to the battlefield with a finality counter on it. Activate only if there are eight or more permanent cards in your graveyard and only as a sorcery. (If a creature with a finality counter on it would die, exile it instead.)

Colorless spells you cast cost less to cast.

+1: Exile the top card of your library face down and look at it. Create a 2/2 colorless Spirit creature token. When that token leaves the battlefield, put the exiled card into your hand.

−3: Destroy target permanent that's one or more colors.

Whenever another creature you control dies, put a +1/+1 counter on Uglúk. If that creature was a Goblin or Orc, put two +1/+1 counters on Uglúk instead.

When you cast this spell, target opponent exiles the top half of their library, rounded up.

Ward—Sacrifice two permanents.

Ulamog enters with a number of +1/+1 counters on it equal to the greatest mana value among cards in exile.

Ulamog has annihilator X, where X is the number of +1/+1 counters on it.

Annihilator 2 (Whenever this creature attacks, defending player sacrifices two permanents of their choice.)

This creature attacks each combat if able.

Whenever this creature enters or transforms into Ulrich of the Krallenhorde, target creature gets +4/+4 until end of turn.

At the beginning of each upkeep, if no spells were cast last turn, transform Ulrich of the Krallenhorde.

Companion — Each nonland card in your starting deck shares a card type. (If this card is your chosen companion, you may put it into your hand from outside the game for as a sorcery.)

As Umori enters, choose a card type.

Spells you cast of the chosen type cost less to cast.

Target creature gets +4/+4 until end of turn. If it's a Spirit, it gains trample until end of turn.

Manifest dread. (Look at the top two cards of your library. Put one onto the battlefield face down as a 2/2 creature and the other into your graveyard. Turn it face up any time for its mana cost if it's a creature card.)

You may return a permanent card from your graveyard to your hand.

When this creature enters, create a number of 1/1 green Squirrel creature tokens equal to your devotion to black. (Each in the mana costs of permanents you control counts toward your devotion to black.)

Unholy Heat deals 2 damage to target creature or planeswalker.

Delirium — Unholy Heat deals 6 damage instead if there are four or more card types among cards in your graveyard.

Draw a card, then you gain life equal to the number of cards in your hand.

Unleash Shell deals 5 damage to target creature or planeswalker and 2 damage to that permanent's controller.

: Exile up to two target cards from a single graveyard.

Unlicensed Hearse's power and toughness are each equal to the number of cards exiled with it.

Crew 2

Choose target artifact or enchantment. Its owner shuffles it into their library.

Each player mills three cards. Then you return up to two creature cards from your graveyard to your hand. (To mill three cards, a player puts the top three cards of their library into their graveyard.)