Whenever you sacrifice a Clue, you gain 3 life.

As an additional cost to cast this spell, sacrifice a creature.

Enchant creature

You control enchanted creature.

Enchanted creature gets +1/+1.

Sacrifice a creature: Draw cards equal to the sacrificed creature's power, then discard three cards.

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

As an additional cost to cast this spell, exile five instant and/or sorcery cards you own with the same artist and different names from outside the game.

I, II, III — Choose one of the exiled cards at random. You may cast it without paying its mana cost.

Menace

Greven, Predator Captain gets +X/+0, where X is the amount of life you've lost this turn.

Whenever Greven attacks, you may sacrifice another creature. If you do, you draw cards equal to that creature's power and you lose life equal to that creature's toughness.

Grimgrin, Corpse-Born enters tapped and doesn't untap during your untap step.

Sacrifice another creature: Untap Grimgrin and put a +1/+1 counter on it.

Whenever Grimgrin attacks, destroy target creature defending player controls, then put a +1/+1 counter on Grimgrin.

Casualty 1 (As you cast this spell, you may sacrifice a creature with power 1 or greater. When you do, copy this spell and you may choose a new target for the copy.)

Choose target creature or planeswalker. If it was dealt noncombat damage this turn, Grisly Sigil deals 3 damage to it and you gain 3 life. Otherwise, Grisly Sigil deals 1 damage to it and you gain 1 life.

When Guardian of Cloverdell enters, create three 1/1 white Kithkin Soldier creature tokens.

, Sacrifice a Kithkin: You gain 1 life.

Whenever you attack, you may sacrifice another creature or an artifact. If you do, create a 4/1 black Skeleton creature token with menace that's tapped and attacking. (It can't be blocked except by two or more creatures.)

Choose a Background (You can have a Background as a second commander.)

Trample

At the beginning of your end step, create a number of Food tokens equal to the number of nontoken creatures you had enter under your control this turn.

, Sacrifice a Food: Target creature gains indestructible until end of turn. Tap it.

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

I — Mill three cards. You may put an Elf or Tyvar card from your graveyard onto the battlefield.

II — Put a +1/+1 counter on each Elf you control.

III — Whenever an Elf you control attacks this turn, target creature an opponent controls gets -1/-1 until end of turn.

When Harvester Troll enters, you may sacrifice a creature or land. If you do, put two +1/+1 counters on Harvester Troll.

Whenever you sacrifice a permanent, Havoc Jester deals 1 damage to any target.

As an additional cost to cast this spell, sacrifice a creature or planeswalker.

Heartfire deals 4 damage to any target.

, Sacrifice a Forest: Heartwood Giant deals 2 damage to target player or planeswalker.

Flying

Whenever Hellcarver Demon deals combat damage to a player, sacrifice all other permanents you control and discard your hand. Exile the top six cards of your library. You may cast any number of spells from among cards exiled this way without paying their mana costs.

Devour 1 (As this enters, you may sacrifice any number of creatures. This creature enters with that many +1/+1 counters on it.)

Hellkite Hatchling has flying and trample if it devoured a creature.

You may choose not to untap Helm of Possession during your untap step.

, , Sacrifice a creature: Gain control of target creature for as long as you control Helm of Possession and Helm of Possession remains tapped.

Sacrifice any number of lands. Reveal the top X cards of your library, where X is the number of lands sacrificed this way. Choose any number of artifact and/or land cards revealed this way. Put all nonland cards chosen this way onto the battlefield, then put all land cards chosen this way onto the battlefield tapped, then put the rest on the bottom of your library in a random order.

Bargain (You may sacrifice an artifact, enchantment, or token as you cast this spell.)

Flying

When High Fae Negotiator enters, if it was bargained, each opponent loses 3 life and you gain 3 life.

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

I, II — Create a 2/2 white Knight creature token with vigilance.

III — Knights you control get +2/+1 until end of turn.

, Sacrifice a Food: Hollow Scavenger gets +2/+2 until end of turn. Activate only once each turn.

, Sacrifice another creature: Put a +1/+1 counter on this creature.

Bargain (You may sacrifice an artifact, enchantment, or token as you cast this spell.)

This spell costs less to cast if it's bargained.

Counter target spell.

Casualty 3 (As you cast this spell, you may sacrifice a creature with power 3 or greater. When you do, copy this spell.)

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

As an additional cost to cast this spell, sacrifice an artifact or creature.

Improvised Club deals 4 damage to any target.

As an additional cost to cast this spell, sacrifice an artifact.

Incendiary Sabotage deals 3 damage to each creature.

Lifelink

, Sacrifice a creature: Put a +1/+1 counter on each Vampire you control.

Enchant creature

Enchanted creature has "At the beginning of your upkeep, sacrifice a creature."

Choose an opponent. You and that player each sacrifice a creature. Each player who sacrificed a creature this way draws two cards.

Choose an opponent. Return a creature card from your graveyard to the battlefield, then that player returns a creature card from their graveyard to the battlefield.

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)

, , Sacrifice an artifact: Return target artifact you control to its owner's hand.

You may sacrifice a Food. If you do, target creature gets +5/+5 until end of turn. Otherwise, that creature gets +3/+3 until end of turn.

(As a Siege enters, choose an opponent to protect it. You and others can attack it. When it's defeated, exile it, then cast it transformed.)

When Invasion of New Capenna enters, you may sacrifice an artifact or creature. When you do, exile target artifact or creature an opponent controls.

When Ironclad Revolutionary enters, you may sacrifice an artifact. If you do, put two +1/+1 counters on Ironclad Revolutionary and each opponent loses 2 life.

Whenever a Zombie or Mutant you control dies, if its power was different from its base power, draw a card.

Come Fly With Me — , Sacrifice a creature: Put a +1/+1 counter on target creature you control. It gains flying until end of turn.

At the beginning of your upkeep, Jinxed Idol deals 2 damage to you.

Sacrifice a creature: Target opponent gains control of Jinxed Idol.

Bargain (You may sacrifice an artifact, enchantment, or token as you cast this spell.)

This spell costs less to cast if it's bargained.

Return target nonland permanent to its owner's hand. Draw a card.

When Junk Jet enters, create a Junk token. (It's an artifact with ", Sacrifice this artifact: Exile the top card of your library. You may play that card this turn. Activate only as a sorcery.")

, Sacrifice another artifact: Double equipped creature's power until end of turn.

Equip

As an additional cost to cast this spell, sacrifice all permanents you control and discard your hand.

Target player loses 5 life.

As an additional cost to cast this spell, sacrifice a creature.

Kazuul's Fury deals damage equal to the sacrificed creature's power to any target.

At the beginning of your end step, you may sacrifice another creature. If you do, reveal cards from the top of your library until you reveal a nonlegendary creature card with lesser mana value, put it onto the battlefield, then put the rest on the bottom of your library in a random order.

When Killer Service enters, create a number of Food tokens equal to the number of opponents you have. (They're artifacts with ", , Sacrifice this artifact: You gain 3 life.")

At the beginning of your end step, you may pay and sacrifice a token. If you do, create a 4/4 green Rhino Warrior creature token.

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

I — Each player mills four cards. Then you may exile a creature or planeswalker card from each graveyard.

II, III — Until end of turn, you may cast spells from among cards exiled with King Narfi's Betrayal, and you may spend mana as though it were mana of any color to cast those spells.

+1: Conjure a card named Kraken Hatchling into your hand.

+1: Untap target creature or land. Prevent all damage that would be dealt to and dealt by that permanent until your next turn.

−3: You may sacrifice a Kraken. If you do, create an 8/8 blue Kraken creature token.

Knight of the Reliquary gets +1/+1 for each land card in your graveyard.

, Sacrifice a Forest or Plains: Search your library for a land card, put it onto the battlefield, then shuffle.

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

I, II — Create a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

III — Exile the top three cards of target opponent's library. You may play those cards this turn.

Sacrifice an artifact: Krark-Clan Grunt gets +1/+0 and gains first strike until end of turn.

Sacrifice an artifact: Krark-Clan Shaman deals 1 damage to each creature without flying.

When Kuldotha Flamefiend enters, you may sacrifice an artifact. If you do, Kuldotha Flamefiend deals 4 damage divided as you choose among any number of targets.

Menace, ward , haste

Whenever Kylox, Visionary Inventor attacks, sacrifice any number of other creatures, then exile the top X cards of your library, where X is their total power. You may cast any number of instant and/or sorcery spells from among the exiled cards without paying their mana costs.