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

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

If this spell was kicked, create a 1/1 white Soldier creature token.

Counter target spell unless its controller pays for each creature you control.

At the beginning of your upkeep, repeat the following process for each opponent in turn order. Reveal the top card of your library. That player may pay life equal to that card's mana value. If they do, exile that card. Otherwise, put it into your hand.

When Protective Parents dies, create a Young Hero Role token attached to up to one target creature you control. (If you control another Role on it, put that one into the graveyard. Enchanted creature has "Whenever this creature attacks, if its toughness is 3 or less, put a +1/+1 counter on it.")

When Protector of Gondor enters the battlefield, 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.)

When Protocol Knight enters the battlefield, tap target creature an opponent controls. Put a stun counter on that creature if you control another Knight. (If a permanent with a stun counter would become untapped, remove one from it instead.)

Imprint — When Prototype Portal enters the battlefield, you may exile an artifact card from your hand.

, : Create a token that's a copy of the exiled card. X is the mana value of that card.

When Proud Pack-Rhino enters the battlefield, choose one —

• Put a shield counter on target permanent. (If it would be dealt damage or destroyed, remove a shield counter from it instead.)

• Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Eternalize (, Exile this card from your graveyard: Create a token that's a copy of it, except it's a 4/4 black Zombie Human Warrior with no mana cost. Eternalize only as a sorcery.)

When Provisions Merchant enters the battlefield, 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.

Provoke the Trolls deals 3 damage to any target. If a creature is dealt damage this way, it gets +5/+0 until end of turn.

Living metal (As long as it's your turn, this Vehicle is also a creature.)

Whenever another creature or Vehicle enters the battlefield under your control, put a +1/+1 counter on Prowl. If this is the second time this ability has resolved this turn, convert Prowl.

Equipped creature can't be blocked except by Walls.

Equip

Vigilance

Landfall — Whenever a land enters the battlefield under your control, put a +1/+1 counter on Prowling Felidar.

Prowling Nightstalker can't be blocked except by black creatures.

This spell can't be countered.

Creature spells you control can't be countered.

Draw four cards, then discard two cards.

Flying

: Target creature gains flying until end of turn.

Replicate—Tap an untapped Horror you control. (When you cast this spell, copy it for each time you paid its replicate cost. You may choose new targets for the copies.)

Exile target instant or sorcery card from a graveyard and copy it. You may cast the copy without paying its mana cost.

Exile Psionic Ritual.

As Psychic Allergy enters the battlefield, choose a color.

At the beginning of each opponent's upkeep, Psychic Allergy deals X damage to that player, where X is the number of nontoken permanents of the chosen color they control.

At the beginning of your upkeep, destroy Psychic Allergy unless you sacrifice two Islands.

Whenever you draw a card, each opponent mills two cards.

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.

Defender (This creature can't attack.)

Whenever Psychic Membrane blocks, you may draw a card.

Enchant permanent

When Psychic Overload enters the battlefield, tap enchanted permanent.

Enchanted permanent doesn't untap during its controller's untap step.

Enchanted permanent has "Discard two artifact cards: Untap this permanent."

You may tap or untap target permanent.

Splice onto Arcane (As you cast an Arcane spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)

Counter target instant or sorcery spell that targets you.

Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, you may copy the spell countered this way. You may choose new targets for the copy.

Shuffle all cards from your graveyard into your library. Target player mills that many cards.

Whenever an opponent shuffles their library, you may look at the top two cards of that library. You may exile one of those cards. Then put the rest on top of that library in any order.

If the difference between your life total and target player's life total is 5 or less, exchange life totals with that player.

Whenever a spell or ability causes a player to shuffle their library, Psychogenic Probe deals 2 damage to that player.

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

Whenever you draw a card, each opponent loses 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.

Public Thoroughfare enters the battlefield tapped.

When Public Thoroughfare enters the battlefield, sacrifice it unless you tap an untapped artifact or land you control.

: Add one mana of any color.

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.)

Return up to one target instant card and up to one target sorcery card from your graveyard to your hand. Exile Pull from the Deep.

Target creature gets -5/-5 until end of turn.

If a basic land you control is tapped for mana, it produces mana of a color of your choice instead of any other type.

Target player reveals three cards from their hand and you choose one of them. That player discards that card. Then if that player has more cards in hand than you, return Pulse of the Dross to its owner's hand.

Draw two cards, then discard a card. Then if an opponent has more cards in hand than you, return Pulse of the Grid to its owner's hand.

You may sacrifice two Mountains rather than pay this spell's mana cost.

Destroy all artifacts.

Puncture Bolt deals 1 damage to target creature. Put a -1/-1 counter on that creature.

Destroy target attacking or blocking creature with power 3 or less.

Punishing Fire deals 2 damage to any target.

Whenever an opponent gains life, you may pay . If you do, return Punishing Fire from your graveyard to your hand.

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

Enchant creature

When enchanted creature dies, return that card to its owner's hand. If that card is returned to its owner's hand this way, you may pay . If you do, return Puppet Master to its owner's hand.

, : You may tap or untap target creature.

Flying

When Puppeteer Clique enters the battlefield, 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.)

Destroy target multicolored permanent.