msem-instigator

When this creature enters, target creature seeks secrets. (Give it that Oath Aura. Fulfill it by attacking with it and two or more other creatures to draw a card.)
Whenever you draw a card, each opponent loses 1 life and you gain 1 life.

Enchant creature
When Paid in Blood enters, create a Treasure token. (It's an artifact with “{T}, Sacrifice this artifact: Add one mana of any color.”)
Enchanted creature gets +1/+1 and has lifelink.

Choose target player, then choose two —
• That player loses 2 life.
• That player draws two cards.
• Put two -1/-1 counters on target creature that player controls.

Bleed {R} (You may cast this spell for its bleed cost if an opponent has lost life this turn.)
Add {R}{R}{R}.

You draw two cards, lose 2 life, then mill two cards.

Lifelink
Whenever Painstriker attacks, it deals 2 damage to target creature defending player controls.

When Paint by Numbers enters, put up to ten brush counters on it.
Whenever a player casts a instant or sorcery spell with mana value equal to the number of brush counters on Paint by Numbers, remove a brush counter from it and copy that spell. You may choose new targets for the copy. Then sacrifice Paint by Numbers if it has no brush counters.

Wu Xing (Add effects based on the number of colors of mana spent to cast this spell.)
1 | Take an extra turn after this one. Exile Paint the Skies with Legend.
5 | During that turn, whenever you tap a permanent for mana, add an additional one mana of any color.

Put a porcelain counter on each of up to one target creature and up to one target artifact. They become 3/3 colorless artifact creatures and lose all abilities.

Each player draws two cards.
Flashback—{W}, Tap two untapped white creatures you control. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Vigilance
When Paired Pathfinders enters, if three or more colors were spent to cast it, create a 1/1 colorless Servo artifact creature token.

First strike
Civilized — Whenever Palace Enforcer attacks, if you control an artifact, a creature, and an enchantment, Palace Enforcer gains deathtouch and lifelink until end of turn.

Flying

Concord — When Palace Servant enters, if there are four or more card types among permanents you control, create two 1/1 white Merfolk creature tokens.

When Palace Vanguard enters, choose one —
• Create a 1/1 blue Bird creature token with flying.
• Create a 2/2 white Cat creature token.

Each instant and sorcery card you own that isn't on the battlefield has inscribe. The inscribe cost is equal to its mana cost. (Exile that spell card inscribed on a creature you control. Whenever that creature attacks, its controller may cast a copy of the inscribed card without paying its mana cost. Inscribe only as a sorcery.)

Equipped creature gets +1/+1 and has vigilance and lifelink.
Equip {3}

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

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.

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.