When Professor of Zoomancy enters, create a 1/1 black and green Pest creature token with "When this creature dies, you gain 1 life."

When Progenitor Exarch enters, incubate 3 X times. (To incubate 3, create an Incubator token with three +1/+1 counters on it and ": Transform this artifact." It transforms into a 0/0 Phyrexian artifact creature.)

: Transform target Incubator token you control.

Protection from everything

If Progenitus would be put into a graveyard from anywhere, reveal Progenitus and shuffle it into its owner's library instead.

Whenever Projektor Inspector or another Detective you control enters and whenever a Detective you control is turned face up, you may draw a card. If you do, discard a card.

When Promising Duskmage dies, if it had a +1/+1 counter on it, draw a card.

Flying

Fabricate 1 (When this creature enters, put a +1/+1 counter on it or create a 1/1 colorless Servo artifact creature token.)

Untap all creatures and lands you control during each other player's untap step.

You may cast creature spells as though they had flash.

Double strike, trample

Whenever Prophetic Flamespeaker deals combat damage to a player, exile the top card of your library. You may play it this turn.

Deathtouch

Mystic Arcanum — At the beginning of your end step, exile the top card of your library. Until the end of your next turn, you may play that card.

Pact Boon — Whenever you play a card from exile, create a Treasure token.

Offspring (You may pay an additional as you cast this spell. If you do, when this creature enters, create a 1/1 token copy of it.)

First strike

Whenever this creature deals combat damage to a player, create that many tapped Treasure tokens.

When Prosperous Pirates enters, create two Treasure tokens. (They're artifacts with ", Sacrifice this artifact: Add one mana of any color.")

When you cast this spell, create X 0/1 red Kobold creature tokens named Kobolds of Kher Keep, where X is the amount of mana spent to cast it.

Flying

Sacrifice another creature: Prossh, Skyraider of Kher gets +1/+0 until end of turn.

Protean Hydra enters with X +1/+1 counters on it.

If damage would be dealt to Protean Hydra, prevent that damage and remove that many +1/+1 counters from it.

Whenever a +1/+1 counter is removed from Protean Hydra, put two +1/+1 counters on it at the beginning of the next end step.

Constellation — Whenever an enchantment you control enters, you may have Protean Thaumaturge become a copy of another target creature, except it has this ability.

When Protector of Gondor enters, create a 1/1 white Human Soldier creature token.

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

When Proteus Machine is turned face up, it becomes the creature type of your choice. (This effect lasts indefinitely.)

Partner with Impetuous Protege (When this creature enters, target player may put Impetuous Protege into their hand from their library, then shuffle.)

, : Tap target creature.

Trample

Creatures you control with trample have "You may have this creature assign its combat damage as though it weren't blocked."

When Provisions Merchant enters, create a Food token. (It's an artifact with ", , Sacrifice this artifact: You gain 3 life.")

Whenever Provisions Merchant attacks, you may sacrifice a Food. If you do, attacking creatures get +1/+1 and gain trample until end of turn.

Whenever you sacrifice another creature, exile it. If that creature was a token, put a +1/+1 counter on Prowling Geistcatcher.

When Prowling Geistcatcher leaves the battlefield, return each card exiled with it to the battlefield under your control.

When Prowling Pangolin enters, any player may sacrifice two creatures. If a player does, sacrifice Prowling Pangolin.

Flying

: Target creature gains flying until end of turn.

Counter target noncreature spell. (Then exile this card. You may cast the creature later from exile.)

Flash

When Psionic Snoop enters, it connives. (Draw a card, then discard a card. If you discarded a nonland card, put a +1/+1 counter on this creature.)

Whenever Psychic Frog deals combat damage to a player or planeswalker, draw a card.

Discard a card: Put a +1/+1 counter on Psychic Frog.

Exile three cards from your graveyard: Psychic Frog gains flying until end of turn.

When Psychic Pickpocket enters, it connives. When it connives this way, return up to one target nonland permanent to its owner's hand. (To have a creature connive, draw a card, then discard a card. If you discarded a nonland card, put a +1/+1 counter on that creature.)

Flying

Harbinger of Despair — Whenever Psychomancer or another nontoken artifact you control is put into a graveyard from the battlefield or is put into exile from the battlefield, target opponent loses 1 life and you gain 1 life.

At the beginning of your upkeep, put a spore counter on Psychotrope Thallid.

Remove three spore counters from Psychotrope Thallid: Create a 1/1 green Saproling creature token.

, Sacrifice a Saproling: Draw a card.

Pterodon Knight has flying as long as you control a Dinosaur.

Whenever Pugnacious Hammerskull attacks while you don't control another Dinosaur, put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.)

All Sliver creatures have flying.

All Slivers have "If this permanent would be put into a graveyard, you may put it on top of its owner's library instead."

Whenever Pulse Tracker attacks, each opponent loses 1 life.

Target creature gets -2/-2 until end of turn. (Then exile this card. You may cast the creature later from exile.)

At the beginning of your end step, exile up to one target creature card from your graveyard. If you do, seek a creature card with mana value equal to the mana value of that card plus one. That card perpetually gains menace.

Flying

When Puppeteer Clique enters, put target creature card from an opponent's graveyard onto the battlefield under your control. It gains haste. At the beginning of your next end step, exile it.

Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

Flying, indestructible

When CARDNAME enters the battlefield, exile all artifacts that aren't colorless.

Whenever CARDNAME deals combat damage to a player, you get an emblem with "If you would lose the game, instead your life total becomes 20, shuffle your graveyard into your library, you lose all poison counters, and you lose this emblem."

Purestrain Genestealer enters with two +1/+1 counters on it.

Vanguard Species — Whenever Purestrain Genestealer attacks, you may remove a +1/+1 counter from it. If you do, search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Flying

If noncombat damage would be dealt to you, prevent that damage. You gain life equal to the damage prevented this way.

When Purity is put into a graveyard from anywhere, shuffle it into its owner's library.

Indestructible

As long as your devotion to red is less than five, Purphoros isn't a creature.

Whenever another creature you control enters, Purphoros deals 2 damage to each opponent.

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

This spell costs less to cast if a creature died this turn.

Ward (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays .)

Purraj of Urborg has first strike as long as it's attacking.

Whenever a player casts a black spell, you may pay . If you do, put a +1/+1 counter on Purraj of Urborg.

, Sacrifice Pus Kami: Destroy target nonblack creature.

Soulshift 6 (When this creature dies, you may return target Spirit card with mana value 6 or less from your graveyard to your hand.)

When Putrid Cyclops enters, scry 1, then reveal the top card of your library. Putrid Cyclops gets -X/-X until end of turn, where X is that card's mana value. (To scry 1, look at the top card of your library, then you may put that card on the bottom.)

Discard a card: Putrid Imp gains flying until end of turn.

Threshold — As long as seven or more cards are in your graveyard, Putrid Imp gets +1/+1 and can't block.

Morph—Discard a Zombie card. (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)

Whenever Pygmy Hippo attacks and isn't blocked, you may have defending player activate a mana ability of each land they control and lose all unspent mana. If you do, Pygmy Hippo assigns no combat damage this turn and at the beginning of your next main phase this turn, you add an amount of equal to the amount of mana that player lost this way.

Pygmy Pyrosaur can't block.

: Pygmy Pyrosaur gets +1/+0 until end of turn.

Whenever Pygmy Troll becomes blocked by a creature, Pygmy Troll gets +1/+1 until end of turn.

: Regenerate Pygmy Troll.