+1: Search your library for a card named Nissa's Chosen, put it onto the battlefield, then shuffle.

+1: You gain 2 life for each Elf you control.

−7: Search your library for any number of Elf creature cards, put them onto the battlefield, then shuffle.

+3: You gain 3 life.

−4: Reveal the top two cards of your library. Put all land cards from among them onto the battlefield and the rest into your hand.

−12: Creatures you control get +5/+5 and gain trample until end of turn.

+1: Reveal the top card of your library. If it's a land card, put it onto the battlefield. Otherwise, put it into your hand.

−2: Create Ashaya, the Awoken World, a legendary 4/4 green Elemental creature token.

−7: Untap up to six target lands. They become 6/6 Elemental creatures. They're still lands.

Trample; banding (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding you control are blocking or being blocked by a creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

Whenever a creature you control blocks, you gain 2 life.

When Noggle Ransacker enters, each player draws two cards, then discards a card at random.

( can be paid with either or 2 life.)

Creatures can't attack you or planeswalkers you control unless their controller pays for each of those creatures.

Whenever you cast an instant or sorcery spell, you may put three +1/+1 counters on target land you control. If you do, that land becomes a 0/0 Elemental creature with haste that's still a land.

When Nulltread Gargantuan enters, put a creature you control on top of its owner's library.

Trample

If you tap a permanent for mana, it produces three times as much of that mana instead.

When Oath of Ajani enters, put a +1/+1 counter on each creature you control.

Planeswalker spells you cast cost less to cast.

When Oath of Liliana enters, each opponent sacrifices a creature.

At the beginning of each end step, if a planeswalker entered the battlefield under your control this turn, create a 2/2 black Zombie creature token.

Vigilance

Other creatures you control get +0/+2 and have vigilance.

Whenever you cast a spell, if its mana value is equal to 1 plus the number of soul counters on Obscura Ascendancy, put a soul counter on Obscura Ascendancy, then create a 2/2 white Spirit creature token with flying.

As long as there are five or more soul counters on Obscura Ascendancy, Spirits you control get +3/+3.

Equipped creature gets +2/+1 and has haste.

Whenever a Warrior creature enters, you may attach Obsidian Battle-Axe to it.

Equip

: Put a blaze counter on target land without a blaze counter on it. For as long as that land has a blaze counter on it, it has "At the beginning of your upkeep, this land deals 1 damage to you." (The land continues to burn after Obsidian Fireheart has left the battlefield.)

Obsidian Obelisk enters tapped.

: Add .

: Add one mana of any color. Spend this mana only to cast a multicolored spell.

Flying

Flying

When Oceanus Dragon enters, tap target creature an opponent controls. Goad it. (Until your next turn, that creature attacks each combat if able and attacks a player other than you if able.)

Gift an Octopus (You may promise an opponent a gift as you cast this spell. If you do, when it enters, they create an 8/8 blue Octopus creature token.)

At the beginning of each end step, create a token that's a copy of target creature token that entered the battlefield this turn.

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

I — Put a +1/+1 counter on up to one target creature. Create a Food token.

II — Draw a card. Create a Food token.

III — Create a 1/1 white Halfling creature token for each Food you control.

At the beginning of your upkeep, look at the top two cards of your library, then put one of them into your graveyard.

Whenever a creature card is put into your graveyard from your library or hand, it perpetually gains "When this card leaves your graveyard, create a tapped 2/2 black Zombie creature token."

When Ogre Savant enters, if was spent to cast it, return target creature to its owner's hand.

Attacking creatures you control have deathtouch.

Whenever a creature you control deals combat damage to a player, draw a card.

: Target snow creature gains first strike until end of turn. ( can be paid with one mana from a snow source.)

O-Kagachi Made Manifest is all colors.

Flying, trample

Whenever O-Kagachi Made Manifest attacks, defending player chooses a nonland card in your graveyard. Return that card to your hand. O-Kagachi Made Manifest gets +X/+0 until end of turn, where X is the mana value of that card.

Ninjutsu (, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)

Whenever Okiba-Gang Shinobi deals combat damage to a player, that player discards two cards.

Flying

At the beginning of each end step, if a creature died this turn, create a Food token. (It's an artifact with ", , Sacrifice this artifact: You gain 3 life.")

, Sacrifice another creature or artifact: Old Flitterfang gets +2/+2 until end of turn.

Old Man Willow's power and toughness are each equal to the number of lands you control.

Whenever Old Man Willow attacks, you may sacrifice another creature or a token. When you do, target creature an opponent controls gets -2/-2 until end of turn.

Omenport Vigilante has double strike as long as you've committed a crime this turn. (Targeting opponents, anything they control, and/or cards in their graveyards is a crime.)

: Target creature becomes a Frog with base power and toughness 3/3 until end of turn.

When Ondu Giant enters, you may search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Enchant creature

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

At the beginning of the upkeep of enchanted creature's controller, that player loses 1 life.

Whenever one or more artifacts you control leave the battlefield during your turn, create a 1/1 colorless Construct artifact creature token. This ability triggers only once each turn.

, Sacrifice an artifact: Oni-Cult Anvil deals 1 damage to each opponent. You gain 1 life.

When an opponent casts a creature spell, if Opal Archangel is an enchantment, Opal Archangel becomes a 5/5 Angel creature with flying and vigilance.

When an opponent casts a creature spell, if Opal Titan is an enchantment, Opal Titan becomes a 4/4 Giant creature with protection from each of that spell's colors.

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

Enchant creature

Whenever enchanted creature deals damage to an opponent, you may draw a card.

: All damage that would be dealt to target creature this turn by a source of your choice is dealt to Oracle's Attendants instead.

Trample

Landfall — Whenever a land you control enters, put a +1/+1 counter on Oran-Rief Hydra. If that land is a Forest, put two +1/+1 counters on Oran-Rief Hydra instead.

When Oran-Rief Ooze enters, put a +1/+1 counter on target creature you control.

Whenever Oran-Rief Ooze attacks, put a +1/+1 counter on each attacking creature with a +1/+1 counter on it.

Whenever Oran-Rief Survivalist or another Ally you control enters, you may put a +1/+1 counter on Oran-Rief Survivalist.

Orcish Cannonade deals 2 damage to any target and 3 damage to you.

Draw a card.

, : Look at the top eight cards of your library. Exile four of them at random, then put the rest on top of your library in any order.

, Sacrifice an artifact: Orcish Vandal deals 2 damage to any target.

Protection from white

: Order of the Ebon Hand gains first strike until end of turn.

: Order of the Ebon Hand gets +1/+0 until end of turn.

Battalion — Whenever Ordruun Veteran and at least two other creatures attack, Ordruun Veteran gains double strike until end of turn. (It deals both first-strike and regular combat damage.)

, Exile three cards from your graveyard: Target player loses 3 life.

When Organ Hoarder enters, look at the top three cards of your library, then put one of them into your hand and the rest into your graveyard.

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

Target player can't cast spells this turn. If this spell was kicked, creatures can't attack this turn.