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.

Flying, lifelink, indestructible, haste

Whenever Orochi Ranger deals combat damage to a creature, tap that creature and it doesn't untap during its controller's next untap step.

Haunt (When this creature dies, exile it haunting target creature.)

When Orzhov Euthanist enters or the creature it haunts dies, destroy target creature that was dealt damage this turn.

Otarian Juggernaut can't be blocked by Walls.

Threshold — As long as seven or more cards are in your graveyard, Otarian Juggernaut gets +3/+0 and attacks each combat if able.

Flying

Whenever Oteclan Levitator attacks, target attacking creature without flying gains flying until end of turn.

, Sacrifice Ouphe Vandals: Counter target activated ability from an artifact source and destroy that artifact if it's on the battlefield. (Mana abilities can't be targeted.)

Outland Boar can't be blocked by creatures with power 2 or less.

, Sacrifice Outland Liberator: Destroy target artifact or enchantment.

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

Chroma — When Outrage Shaman enters, it deals damage to target creature equal to the number of red mana symbols in the mana costs of permanents you control.

At the beginning of combat on your turn, you may pay . If you do, put a +1/+1 counter on Overclocked Electromancer.

Whenever Overclocked Electromancer attacks, double its power until end of turn.

Whenever Overclocked Electromancer deals combat damage to a creature, if that creature was dealt excess damage this turn, you get X , where X is that excess damage.

When Ovinomancer enters, sacrifice it unless you return three basic lands you control to their owner's hand.

, Return Ovinomancer to its owner's hand: Destroy target creature. It can't be regenerated. That creature's controller creates a 0/1 green Sheep creature token.

Create a 4/4 red Giant creature token.

At the beginning of your next upkeep, pay . If you don't, you lose the game.

As Painter's Servant enters, choose a color.

All cards that aren't on the battlefield, spells, and permanents are the chosen color in addition to their other colors.

Partner with Haldan, Avid Arcanist

Haste

Whenever Pako, Arcane Retriever attacks, exile the top card of each player's library and put a fetch counter on each of them. Put a +1/+1 counter on Pako for each noncreature card exiled this way.

Other Dinosaurs you control have haste.

When Palani's Hatcher enters, create two 0/1 green Dinosaur Egg creature tokens.

At the beginning of combat on your turn, if you control one or more Eggs, sacrifice an Egg, then create a 3/3 green Dinosaur creature token.

Draft Paliano Vanguard face up.

As you draft a creature card, you may reveal it, note its creature types, then turn Paliano Vanguard face down.

Other creatures you control of a type you noted for cards named Paliano Vanguard get +1/+1.

All damage that would be dealt to you and other permanents you control is dealt to Palisade Giant instead.

Whenever a creature enters, that creature's controller may have it deal damage equal to its power to any target of their choice.

Library ninjutsu (, Shuffle an unblocked attacker you control into its owner's library: Put this card onto the battlefield from your library tapped and attacking. Activate only while searching your library.)

Whenever Panglacial Shinobi deals combat damage to a player, draw a card.

Whenever a player plays a land, return Pangosaur to its owner's hand.

Cast this spell only during combat before blockers are declared.

Target creature can't block this turn.

Draw a card at the beginning of the next turn's upkeep.

, Sacrifice Panic Spellbomb: Target creature can't block this turn.

When Panic Spellbomb is put into a graveyard from the battlefield, you may pay . If you do, draw a card.

Whenever Panicked Bystander or another creature you control dies, you gain 1 life.

At the beginning of your end step, if you gained 3 or more life this turn, transform Panicked Bystander.

: The next face-down creature spell you cast this turn costs less to cast.

If turning a face-down permanent face up causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.

Whenever Pantlaza, Sun-Favored or another Dinosaur you control enters, you may discover X, where X is that creature's toughness. Do this only once each turn. (Exile cards from the top of your library until you exile a nonland card with that mana value or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)

Other red creatures you control get +1/+1.

, : Another target red creature you control gains haste until end of turn. (It can attack and this turn.)

Delirium — Paranoid Parish-Blade gets +1/+0 and has first strike as long as there are four or more card types among cards in your graveyard.

Enchant creature

At the beginning of your upkeep, enchanted creature's controller sacrifices it and you create a 1/1 colorless Phyrexian Myr artifact creature token.

Trample

Path of Ancestry enters tapped.

: Add one mana of any color in your commander's color identity. When that mana is spent to cast a creature spell that shares a creature type with your commander, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

Devoid (This card has no color.)

When Path of Annihilation enters, create two 0/1 colorless Eldrazi Spawn creature tokens with "Sacrifice this creature: Add ."

Eldrazi you control have ": Add one mana of any color."

Whenever you cast a creature spell with mana value 7 or greater, you gain 4 life.

Discard all the cards in your hand. Add for each card discarded this way, then draw that many cards plus one.

Will of the Planeswalkers — Starting with you, each player votes for planeswalk or chaos. If planeswalk gets more votes, planeswalk. If chaos gets more votes or the vote is tied, chaos ensues.

If you've cast another white spell this turn, you may cast this spell without paying its mana cost.

Destroy all enchantments.

Destroy two target enchantments.