msem-instigator

When Disassociate enters, exile target creature until Disassociate leaves the battlefield.

{U}{R}{W}, Discard a card named Sha'Iv, God of Order: Sha'Iv gains indestructible and becomes a God creature in addition to its other types.
Whenever Sha'Iv enters or attacks, choose target creature an opponent controls. Untap it, then tap each other creature that player controls. They don't untap during their controller's next untap step.

Erratic, erratic, erratic (When this creature dies, reveal the top four cards of your library. Put a creature card that costs less than this revealed this way onto the battlefield and the rest on the bottom of your library in any order. Repeat this process twice.)

Whenever Inquisitive Guardian deals combat damage to an opponent, you may exile a nonland card from your graveyard. If you do, draw a card.
{U}: Inquisitive Guardian gains flying until end of turn.

Braineater Abominus can't be blocked by creatures with power 4 or greater.
Whenever a creature you control deals combat damage to a player, exile the top card of that player's library. You may play that card for as long as it remains exiled, and you may spend mana as though it were mana of any type to cast it.

Enchant player
When Scaleblight's Quarry enters, you may have target creature you control deal damage equal to its power to target creature enchanted player controls.
Whenever enchanted player becomes the target of a spell you control, you gain 1 life.

({T}: Add {B} or {G}.)
Mossy Shrine enters tapped unless you control two or more basic lands.

Flash
Enchant creature
Whenever enchanted creature deals combat damage, put that many +1/+1 counters on it.
When enchanted creature leaves the battlefield, distribute X +1/+1 counters among any number of target creatures you control, where X is the number of +1/+1 counters it had on it.

Protection from Dusk Chord (This creature can't be blocked, targeted, dealt damage, or enchanted by anything named Dusk Chord.)
{1}{W}: Target Reflection's base toughness becomes equal to Dawn Chord's toughness until end of turn.

When Gitaxian Reprocessor enters, if you cast it, choose one —
• Create a token that's a copy of another target creature, except it's an artifact and isn't a creature.
• Create a token that's a copy of target noncreature artifact, except it's a 2/2 creature in addition to its other types.

Lifelink
{2}{B}: Target Spirit gets +1/+0 and gains lifelink until end of turn.

[+1]: Untap target land.
[–1]: Exile the top card of your library. You may play that card until end of turn. If a land card is exiled this way, you gain 2 life.
[–7]: Untap each land you control. Lands you control become 3/3 Elemental creatures with haste until end of turn. They're still lands.

Flying
When Djinni of Whispers enters, untap up to three Islands.

Whenever a land becomes tapped, its controller sacrifices it and creates a Treasure token.

Defender
Venerable Loremaster can attack as though it didn't have defender if it's in a pack. (Two or more creatures you control with equal power are in a pack.)

{1}{B}, Sacrifice another creature: Put a +1/+1 counter on Nemesis Eidolon. Draw a card. Activate only as a sorcery.

You may reveal an Avatar or planeswalker card you own from outside the game and put it into your hand.

Survivors you control get +2/+2.

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
Whenever you cast a noncreature spell, you gain life equal to its mana value.

When Archive Guardian enters, return target card from your graveyard to your hand.
Recite {1}{B}{G} (You may cast this creature from your graveyard for its recite cost. If you do, exile it when it enters or if it would leave the battlefield.)

Whenever a player discards a card, put a +1/+1 counter on Karatuy.
When a player has no cards in hand, Karatuy becomes a Demon and gains flying and lifelink. This ability triggers only once.
Demoncycling {1}{B}{B} ({1}{B}{B}, Discard this card: Search your library for a Demon card, reveal it, put it into your hand, then shuffle.)

You gain 4 life. Surveil 2.
Whenever you cast a spell, you may pay {W} and exile Rising Faith from your graveyard. If you do, that spell gains lifelink. (If it becomes a permanent, it keeps lifelink indefinitely.)

Foretell {X}{B} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)
Target creature gets -X/-X until end of turn. If this spell was foretold, you gain X life.

As an additional cost to cast this spell, tap X untapped creatures you control.
Lightning Chorus deals X damage to any target and you gain X life.

Whenever you draw your second card each turn, draw a card.