Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.)

Overbeing of Myth's power and toughness are each equal to the number of cards in your hand.

At the beginning of your draw step, draw an additional card.

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.

Defender

: You gain 1 life.

, Sacrifice Overgrown Arch: Learn. (You may reveal a Lesson card you own from outside the game and put it into your hand, or discard a card to draw a card.)

Defender

: Add for each creature you control with defender.

: Add one mana of any color.

: Add two mana of any one color. Spend this mana only to turn permanents face up.

Impending 5— (If you cast this spell for its impending cost, it enters with five time counters and isn't a creature until the last is removed. At the beginning of your end step, remove a time counter from it.)

Whenever Overlord of the Balemurk enters or attacks, mill four cards, then you may return a non-Avatar creature card or a planeswalker card from your graveyard to your hand.

Impending 4— (If you cast this spell for its impending cost, it enters with four time counters and isn't a creature until the last is removed. At the beginning of your end step, remove a time counter from it.)

Flying

Whenever Overlord of the Floodpits enters or attacks, draw two cards, then discard a card.

Impending 4— (If you cast this spell for its impending cost, it enters with four time counters and isn't a creature until the last is removed. At the beginning of your end step, remove a time counter from it.)

Whenever Overlord of the Mistmoors enters or attacks, create two 2/1 white Insect creature tokens with flying.

First Contact — Whenever Overseer of Vault 76 or another creature you control with power 3 or less enters, put a quest counter on Overseer of Vault 76.

At the beginning of combat on your turn, you may remove three quest counters from among permanents you control. When you do, put a +1/+1 counter on each creature you control and they gain vigilance until end of turn.

Menace

Whenever Overt Operative deals combat damage to a player, it assembles a Contraption. (Put the top card of your Contraption deck face up onto one of your sprockets.)

When Overwhelmed Apprentice enters, each opponent mills two cards. Then you scry 2. (Look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)

Whenever you commit a crime during your turn, Overzealous Muscle gains indestructible until end of turn. (Targeting opponents, anything they control, and/or cards in their graveyards is a crime. Damage and effects that say "destroy" don't destroy a creature with indestructible.)

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.

Partner with Blue, Loyal Raptor

: Put your choice of a menace, trample, reach, or haste counter on target Dinosaur. Activate only as a sorcery.

Trample

Keen Senses — When Owlbear enters, draw a card.

At the beginning of your end step, if creatures you control have total power 8 or greater, draw a card.

Vigilance

Ox Drover can't be blocked by Oxen.

Whenever Ox Drover enters or attacks, target opponent creates a 2/4 white Ox creature token and you draw a card.

Sacrifice an artifact: Oxidda Daredevil gains haste until end of turn.

Affinity for Mountains (This spell costs less to cast for each Mountain you control.)

Haste

Oyaminartok, Polar Werebear has hexproof if it hasn't dealt damage yet.

Whenever Oyaminartok deals combat damage to a player, create a Food token.

, Sacrifice a Food: Draft a card from Oyaminartok's spellbook. When you do, add . Spend this mana only to cast blue creature spells.

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

When Pack Guardian enters, you may discard a land card. If you do, create a 2/2 green Wolf creature token.

: Each creature you control named Pack Mastiff gets +1/+0 until end of turn.

At the beginning of combat on your turn, if you control another Wolf or Werewolf, put a +1/+1 counter on Packsong Pup.

When Packsong Pup dies, you gain life equal to its power.

Menace

Whenever a player casts their first spell each turn, they create a Treasure token.

Whenever an artifact an opponent controls is put into a graveyard from the battlefield, Pain Distributor deals 1 damage to that player.

Inspired — Whenever Pain Seer becomes untapped, reveal the top card of your library and put that card into your hand. You lose life equal to that card's mana value.

At the beginning of your upkeep, roll a six-sided die. Painiac gets +X/+0 until end of turn, where X is the result.

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.

Whenever Paired Tactician and at least one other Warrior attack, put a +1/+1 counter on Paired Tactician.

Flying

When Palace Familiar dies, draw a card.

When Palace Jailer enters, you become the monarch.

When Palace Jailer enters, exile target creature an opponent controls until an opponent becomes the monarch.

Vigilance, lifelink

Exile Paladin Danse, Steel Maverick: Each creature you control that's an artifact or Human gains indestructible until end of turn.

First strike, protection from black and from red (This creature deals combat damage before creatures without first strike. It can't be blocked, targeted, dealt damage, or enchanted by anything black or red.)

Whenever Paladin of Prahv deals damage, you gain that much life.

Forecast — , Reveal Paladin of Prahv from your hand: Whenever target creature deals damage this turn, you gain that much life. (Activate only during your upkeep and only once each turn.)

When Paladin of the Bloodstained enters, create a 1/1 white Vampire creature token with lifelink.

Reach

Whenever a creature with flying attacks you or a planeswalker you control, Palazzo Archers deals damage equal to its power to that creature.

Reach (This creature can block creatures with flying.)

Forestcycling , plainscycling (, Discard this card: Search your library for a Forest or Plains card, reveal it, put it into your hand, then shuffle.)

, : Target creature gains protection from the color of its controller's choice until end of turn. ( is the untap symbol.)

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.

Flying, vigilance, trample

Palladia-Mors, the Ruiner has hexproof if it hasn't dealt damage yet.

At the beginning of your upkeep, put a spore counter on Pallid Mycoderm.

Remove three spore counters from Pallid Mycoderm: Create a 1/1 green Saproling creature token.

Sacrifice a Saproling: Each creature you control that's a Fungus or a Saproling gets +1/+1 until end of turn.

: Target creature gets +0/+2 until end of turn. Activate only during your turn, before attackers are declared.

Trample

While you're searching your library, you may cast Panglacial Wurm from your library.

Reach

: Panicked Altisaur deals 2 damage to each opponent.

Creatures named Rock Lobster can't attack or block.

When Paperfin Rascal enters, clash with an opponent. If you win, put a +1/+1 counter on Paperfin Rascal. (Each clashing player reveals the top card of their library, then puts that card on the top or bottom. A player wins if their card had a higher mana value.)

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

, : Another target green creature you control gains trample until end of turn. (It can deal excess combat damage to the player or planeswalker it's attacking.)

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

, : Another target blue creature you control gains flying until end of turn.