msem-instigator

When Phyrexian Arcforger enters, create a 1/1 colorless Phyrexian artifact creature token for each artifact you control.

Ward—Discard a card. (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player discards a card.)
You have “Ward—Discard a card.”

{T}: Add {C}.
{T}, Pay 1 life: Add one mana of any color.

When Pilgrim of Bal enters, you may search your library and/or graveyard for an Aurashaper or Curse card, reveal it, and put it into your hand. If you searched your library, shuffle.

When Pilgrim's Packbeast enters, reveal the top five cards of your library. You may put an enchantment or land card from among them on top. If you do, draw a card. Put the rest on the bottom in any order.

When Pious Flutist enters, create an Idol token. (It's an artifact with “{1}, Sacrifice this artifact: Put a +1/+1 counter on target creature. Activate only as a sorcery.”)

Lifelink
Whenever you gain life, each opponent loses 1 life.

Pay 1 life, Exile a card from your graveyard: Piruz's Knight gets +2/+2 until end of turn. Activate this ability only once each turn.

Whenever a creature attacks you or a planeswalker you control, Pitfall Pangolin gets +1/+0 until end of turn.

Flash
When Pivot-Fist Meditant enters, choose a creature you control. Whenever that creature is dealt damage this turn, it deals that much damage to any other target.

Flash
Flying
When Pixie Procurer enters, copy target activated ability, triggered ability, or spell with mana value 2 or less. You may choose new targets for the copy. (A copy of a permanent spell becomes a token.)

Flying
When Planchette Poltergeist enters, you may exile target creature. Its owner may cast it from exile for as long as it remains exiled.

When Plane-Traversal Guide enters, you may exile a card you own from outside the game. When Plane-Traversal Guide is no longer on the battlefield, put the exiled card into your hand.

Experience (Whenever this creature attacks, if it has fewer than three +1/+1 counters on it, put a +1/+1 counter on it.)
Whenever a creature you control with a +1/+1 counter on it deals combat damage to a player, arm that creature. (Create a colorless Equipment artifact token with “Equipped creature gets +1/+0” and equip {2}, then attach it to that creature.)

Flying
Whenever Pledged Griffin attacks, another target attacking creature gains flying until end of turn.

Harmony — Creatures you control get +1/+0 and gain vigilance until end of turn.
When Plume de Val Singer enters, harmonize. (Trigger up to one harmony of one permanent you control.)

Whenever Poignant Hydra deals combat damage to a player, put a +1/+1 counter on it.
Creature spells you cast with power less than Poignant Hydra's power cost {1} less to cast.

Whenever Poised Koi attacks or blocks, look at the top two cards of your library, put any of them into your graveyard, then the rest back on top in any order.

Lionize {1}{B} ({1}{B}, Exile this card from your hand: Put a +1/+1 counter on target creature and it gains the following ability until end of turn. You may cast this card on a later turn from exile.)
Deathtouch

{B}{G}, {T}, Remove a -1/-1 counter from a creature you control: Create a 1/1 green Elf Druid creature token.

Poisonblade Trainee enters with a -1/-1 counter on it.

Deathtouch
Poisoned Aleud must be blocked if able.

Deathtouch
When Poisoned Devout enters, choose one —
• Put a +1/+1 counter on Poisoned Devout.
• Create a colorless artifact token named Lotus Petal with “{T}, Sacrifice this artifact: Add one mana of any color.”

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)
When Poisonheart Undead enters, you draw a card and you lose 1 life.

When Polgek Restorationist enters, you may return target artifact, enchantment, or planeswalker card from your graveyard to your hand.