Night Market Guard can block an additional creature each combat.

Flying

Whenever another nontoken creature you control dies, you may exile it. If you do, create a token that's a copy of that creature, except it's 1/1 and it's a Nightmare in addition to its other types.

Deathtouch

: Add .

: Add one mana of any color.

You can't cast noncreature spells.

Whenever you tap a land for mana, add one mana of any type that land produced.

Whenever you tap a Swamp for mana, add an additional .

: Nirkana Revenant gets +1/+1 until end of turn.

Whenever you tap a Forest for mana, add an additional .

+1: Put three +1/+1 counters on up to one target noncreature land you control. Untap it. It becomes a 0/0 Elemental creature with vigilance and haste that's still a land.

−8: You get an emblem with "Lands you control have indestructible." Search your library for any number of Forest cards, put them onto the battlefield tapped, then shuffle.

Flying, hexproof from monocolored

Each instant and sorcery card in your graveyard that's exactly two colors has jump-start. (You may cast that card from your graveyard by discarding a card in addition to paying its other costs. Then exile it.)

Noble's Purse enters tapped and with three coin counters on it.

, Remove a coin counter from Noble's Purse: Create a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

: Add . Nomad Stadium deals 1 damage to you.

Threshold — , , Sacrifice Nomad Stadium: You gain 4 life. Activate only if seven or more cards are in your graveyard.

, : For one spell this turn, you may spend mana as though it were mana of any type to pay that spell's mana cost. (Additional costs are still paid normally.)

: Add .

, : Put a +1/+1 counter on each creature that entered this turn.

, : Create a Food token. (It's an artifact with ", , Sacrifice this artifact: You gain 3 life.")

Whenever you sacrifice a Food, create a tapped Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

: Add .

, : Choose a color. Add an amount of mana of that color equal to your devotion to that color. (Your devotion to a color is the number of mana symbols of that color in the mana costs of permanents you control.)

Nyx Lotus enters tapped.

: Choose a color. Add an amount of mana of that color equal to your devotion to that color. (Your devotion to a color is the number of mana symbols of that color in the mana costs of permanents you control.)

: Add .

: Add . Spend this mana only to cast a creature spell.

, : Put a +1/+1 counter on each Frog, Rabbit, Raccoon, or Squirrel you control that entered the battlefield this turn.

: Add one mana of any color.

, Exert Oasis Ritualist: Add two mana of any one color. (An exerted creature won't untap during your next untap step.)

When Oath of Gideon enters, create two 1/1 white Kor Ally creature tokens.

Each planeswalker you control enters with an additional loyalty counter on it.

Menace

Whenever Obeka, Splitter of Seconds deals combat damage to a player, you get that many additional upkeep steps after this phase.

: Add , , or .

: Add , , or .

: Add .

: Return Oboro, Palace in the Clouds to its owner's hand.

When Octo Opus enters, create a 4/4 blue Octopus Performer creature token named Contortionist with "At the beginning of your upkeep, you may fold this token in half." (It becomes 2/2, then 1/1, ½/½, and so on.)

Sacrifice Octo Opus: Draw a card and an additional card for each of Contortionist's folds.

First strike

Whenever Ogre Battlecaster attacks, you may cast target instant or sorcery card from your graveyard by paying in addition to its other costs. If that spell would be put into a graveyard, exile it instead. When you cast that spell, Ogre Battlecaster gets +X/+0 until end of turn, where X is that spell's mana value.

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

I, II — Each opponent loses 1 life and you gain 1 life.

III — Exile this Saga, then return it to the battlefield transformed under your control.

As this creature transforms into Olag, Ludevic's Hubris, it becomes a copy of a creature card exiled with it, except its name is Olag, Ludevic's Hubris, it's 4/4, and it's a legendary blue and black Zombie in addition to its other colors and types. Put a number of +1/+1 counters on Olag equal to the number of creature cards exiled with it.

Trample

When Old-Growth Troll dies, if it was a creature, return it to the battlefield. It's an Aura enchantment with enchant Forest you control and "Enchanted Forest has ‘: Add ' and ‘, , Sacrifice this land: Create a tapped 4/4 green Troll Warrior creature token with trample.'"

Flying

Whenever another creature you control enters, you may discard a card. If you do, put a +1/+1 counter on that creature, it gains haste until end of turn, and it becomes a Vampire in addition to its other types.

: Add .

, , Exile Ominous Cemetery: Target creature's owner shuffles it into their library.

When Omnath, Locus of Creation enters, draw a card.

Landfall — Whenever a land you control enters, you gain 4 life if this is the first time this ability has resolved this turn. If it's the second time, add . If it's the third time, Omnath deals 4 damage to each opponent and each planeswalker you don't control.

Ondu Skyruins enters tapped.

: Add .

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

I — The Ring tempts you, then each player mills cards equal to your Ring-bearer's power.

II — Destroy all nonlegendary creatures.

III — Each opponent loses 1 life for each creature card in that player's graveyard.

Target player draws a card.

Retrace (You may cast this card from your graveyard by discarding a land card in addition to paying its other costs.)

Each other non-Aura enchantment is a creature in addition to its other types and has base power and base toughness each equal to its mana value.

Choose one —

• Add two mana of any one color and two mana of any other color. Spend this mana only to cast creature or enchantment spells.

• Creatures you control get +1/+0 until end of turn.

Whenever you crank Optical Optimizer, until end of turn, target creature becomes an artifact in addition to its other types and gains ": Draw a card."

You may play an additional land on each of your turns.

Play with the top card of your library revealed.

You may play lands from the top of your library.

Oran-Rief, the Vastwood enters tapped.

: Add .

: Put a +1/+1 counter on each green creature that entered this turn.

Ascend (If you control ten or more permanents, you get the city's blessing for the rest of the game.)

: Add .

, Sacrifice Orazca Relic: You gain 3 life and draw a card. Activate only if you have the city's blessing.

, Sacrifice a Forest: Add three mana in any combination of and/or .

: Add . Spend this mana only to cast an instant or sorcery spell.

Craft with four or more red instant and/or sorcery cards (, Exile this artifact, Exile the four or more from your graveyard: Return this card transformed under its owner's control. Craft only as a sorcery.)

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

I — Origin of the Hidden Ones deals 4 damage to any target.

II — Create two 1/1 black Assassin creature tokens with menace.

III — Whenever an Assassin you control attacks this turn, create a 1/1 black Assassin creature token with menace that's tapped and attacking.

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

Destroy target artifact or enchantment. If this spell was kicked, it deals damage equal to that permanent's mana value to target creature.

At the beginning of combat on your turn, put a +1/+1 counter on target creature.

Whenever Ornery Tumblewagg attacks while saddled, double the number of +1/+1 counters on target creature.

Saddle 2 (Tap any number of other creatures you control with total power 2 or more: This Mount becomes saddled until end of turn. Saddle only as a sorcery.)

: Add one mana of any color.

: Add .

: Add or .

, , Sacrifice Orzhov Cluestone: Draw a card.

: Add or .

: Orzhov Keyrune becomes a 1/4 white and black Thrull artifact creature with lifelink until end of turn.

, : Add .

When you cast this spell, create a token that's a copy of it, except it isn't legendary.

: Add . Spend this mana only to cast an artifact spell or activate an ability of an artifact.

Paradox — Whenever you cast a spell from anywhere other than your hand, investigate. (Create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

: Add .

Channel — , Discard Otawara, Soaring City: Return target artifact, creature, enchantment, or planeswalker to its owner's hand. This ability costs less to activate for each legendary creature you control.