msem-instigator

Put target spell or nonland permanent on top of its owner's library.

Sacrifice a creature: Pale Horse gets +2/+2 until end of turn.
Ride {B} ({B}: Transform this and attach it to target creature you control without a Steed. Ride only as a sorcery.)

{2}, {T}, Sacrifice Pale Morningstar Powder: Put two -1/-1 counters on target creature.

When Pale Night Remnants enters, return up to one target nonland permanent and all other permanents with the same name as that permanent to their owners' hands.

When Paleolizard enters, you may discard a card. When you do, return target card from your graveyard to your hand that shares a type with that card.

When Paleontologist enters, search your library for up to two artifact and/or Skeleton cards and put them into your graveyard, then shuffle.

When Palesoul Mender dies, you gain life equal to its toughness.

Return target creature card from your graveyard to the battlefield. That creature is a black Elemental in addition to its other colors and types. Upgrade it. (Give it one of the listed counters it doesn't already have.)
• +1/+1
• Flying
• Lifelink

Once during each of your turns, you may cast a legendary creature or planeswalker spell from your graveyard.
Sacrifice Pallid Herald: Exile up to three target cards from graveyards.

Flying
When Palloren Vulture enters, each player mills two cards.

Reach
Whenever Palm Walker or another creature you control enters, you gain 2 life.

Flying
Other creatures get -1/-1.
Whenever Pan Long enters or deals combat damage to a player, return to the battlefield under your control target creature card from a graveyard that was put there from the battlefield this turn.

Menace
Landfall — Whenever a land you control enters, create two 1/1 red and white Warrior creature tokens with haste. Exile them at the beginning of the next end step.

Other creatures you control get +1/+0.
{R}{W}: Create a 1/1 red and white Warrior creature token. That token gains haste. Exile it at the beginning of the next end step. Activate only as a sorcery.

Creatures you control with +1/+1 counters on them have haste and trample.
At the beginning of combat on your turn, target creature explores. (Reveal the top card of your library. Put it into your hand if it's a land. Otherwise, put a +1/+1 counter on that creature, then you may put that card into your graveyard.)

Target creature you control gets +2/+1 until end of turn. It fights target creature you don't control. (Each deals damage to the other equal to its power.)

When Pandora's Eviction enters, exile target creature an opponent controls until Pandora's Eviction leaves the battlefield.
{4}{W}: Exile Pandora's Eviction. Return it to the battlefield under its owner's control at the beginning of the next end step.

Remove all counters from target creature. You gain 1 life for each counter removed this way.

{G/U}: Pangoling gains hexproof until end of turn.
{G/U}: Move a counter from target creature you control onto Pangoling.
{G/U}: Whenever Pangoling deals combat damage to a player this turn, draw a card. Activate only once each turn.
{1}: Pangoling gets +1/-1 or -1/+1 until end of turn.

When Pantheon Breaker enters, each opponent sacrifices an enchantment.

{T}: Add {G}.
{T}: Add {W}, {U}, {R}, or {B}. Spend this mana only to cast a multicolored spell.

Flash
As long as Panya and exactly one other creature are attacking, both have flying.

Whenever Panya attacks, you may put an escapade counter on her, then you may cast an instant or sorcery card from your hand with mana value equal to the number of escapade counters on Panya without paying its mana cost.
{1}{U}: Panya gains flying until end of turn.

Whenever Paomar Greatheart attacks, put a trample counter on target attacking creature in its pack. (Two or more creatures you control with equal power are in a pack.)

Trample
Creatures in Paomar Primus's pack can't be blocked by more than one creature. (Two or more creatures you control with equal power are in a pack.)