msem-instigator

Siphon (Each -1/-1 counter you put on your creatures up to their remaining toughness while casting this pays for {1}.)
When this enchantment enters, exile target nonland permanent an opponent controls until this enchantment leaves the battlefield.

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 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.

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.

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.)

{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.

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.)

Exile target creature. If you controlled that creature, create a 4/4 red Dragon creature token with flying. Otherwise, its controller creates a 1/1 white Bird creature token with flying.
Showcase {4}{U} (Then if you cast this for its showcase cost, create a 1/1 red Bard creature token that can't block and exile this. Whenever it attacks, you may cast a free copy of this.)

At the beginning of your upkeep, look at the top card of your library. If it's an artifact or enchantment card, you may reveal it and put it into your hand. Otherwise, you may put it on the bottom of your library.
If you would begin a combat phase, you may skip that phase and begin an additional upkeep step instead.

Whenever an artifact or enchantment you control enters, target player mills two cards.

Choose one or both—
• Target creature gets -4/-4 until end of turn.
• Return target creature card with mana value 1 from your graveyard to the battlefield.

At the beginning of combat on your turn, amass Soldiers 1. (Put a +1/+1 counter on an Army you control. It's also a Soldier. If you don't control one, create an 0/0 black Soldier Army creature token first.)
Armies you control have flying and lifelink.

{W}: Parish Custodian gains lifelink until end of turn. (Damage dealt by this creature also causes you to gain that much life.)

Choose one —
• Attacking creatures get +2/+0 until end of turn.
• Discard up to two cards, then draw that many cards plus one.

Tithe (As you cast this spell, you may tap three artifacts and/or creatures you control.)
Create two 1/1 red Cleric creature tokens with haste. If this spell's tithe was paid, create four of those tokens instead.

Whenever Path Lighter deals combat damage to a player, it 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 this creature, then you may put that card in your graveyard.)

Enchant opponent
When Pathless Shallows enters, exile target creature enchanted player controls until Pathless Shallows leaves the battlefield.
Enchanted player can't cast spells with the same name as the exiled card.

Whenever you create one or more tokens, scry 1.
{3}{U}, Sacrifice Pathshaper Mage: Aetherize target creature you control. Activate only as a sorcery. (To aetherize, create a token that's a copy of it, then exile that token.)

Whenever you cast an instant spell during your main phase, copy that spell. You may choose new targets for the copies.

Whenever Patron of Asham attacks, tap target creature an opponent controls with power less than or equal to your fealty to Plains. (Each Plains you control counts towards your fealty to Plains.)

When Paul's Finest Act enters, search your library for a legendary red card, reveal it, put it into your hand, then shuffle.
Creatures you control get +1/+0 as long as you've cast a noncreature spell this turn.