msem-instigator

[+1]: Move a counter from up to one target permanent onto another permanent that shares a type with it.
[–1]: Target creature gets -1/-3 until end of turn.
[–5]: Search target opponent's library for a creature or planeswalker card and put that card onto the battlefield under your control. Then that player shuffles.

Kicker {1}{U} (You may pay an additional {1}{U} as you cast this spell.)
Tap up to three target creatures. If this spell was kicked, those creatures don't untap during their controller's next untap step.

Whenever The First Idol attacks, 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.”)
Sacrifice three Idols: Return The First Idol from your graveyard your hand.

Destroy target creature. You may put a -1/-1 counter on target creature.

Permanent cards in your graveyard have The Undercity Amalgam's Adventure.
Once during each of your turns, you may cast an Adventure spell from your graveyard.

Enchant land
When Unexplored Regions enters, draw a card.
Enchanted land is an artifact in addition to its other types and has “{T}: Add one mana of any color.”

Chronicle (As this enters and after your draw step, add a lore counter. Stop after III.)
[Lore I-II] Until your next turn, target creature an opponent controls gets -1/-0.
[Lore III] Scry 2, then draw a card.

When Smokeweaver Initiate dies, draw a card.

Brilliant Runepearl enters tapped.
Whenever you cast a permanent spell, you gain 1 life.
{T}: Add one mana of any color. Spend this mana only to cast permanent spells.

(As an Encounter enters, choose an opponent to protect it. You and others can attack it. When defense counters are removed, create a 0/0 Army token if you don't control one, then put that many +1/+1 counters on a Army you control.)
When Dawn Over Avaz enters, it deals 3 damage to each creature.

Eureka! (At the beginning of each end step, you get a research counter if you cast a spell this turn. Then if you have eight or more research counters, remove them and create a Masterpiece token of your choice.)
When Bottled Lightning enters, it deals 3 damage to any target. Scry 1.

Whenever Faithful of New Covenants and at least one Angel, Demon, Faerie, or Spirit attack, Faithful of New Covenants gets +1/+2 until end of turn.

You may look at the top card of your library any time.
Once each turn, you may cast a spell from the top of your library.
Whenever you cast a spell from a library, create a 1/1 blue Elemental creature token with vigilance.

Trample
Auspicious Qilin must be blocked if able.

Rhapsody {4}{R}{W} (Pay {4}{R}{W} to cast this as a 4/4, or as a sorcery to make it become a 4/4.)
Lifelink, haste

Target creature gets +2/+0 until end of turn and can't be blocked except by three or more creatures this turn.
Flashback {U/R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Flash
When Slippery Assassin enters, counter target spell if its mana value is less than or equal to Slippery Assassin's power.
Sacrifice another creature: Put a +1/+1 counter on Slippery Assassin.

Royster Hounds can't be blocked by creatures with power 2 or less.

[+1]: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.
[–3]: You get an emblem with “{1}{G}: You may play an additional land this turn.”
[–6]: Creatures you control gain trample and have base power and toughness X/X until end of turn, where X is the number of lands you control.

Look at the top four cards of your library. You may reveal a land card from among them and put it into your hand. Put the rest on the bottom of your library in any order.
Dominance — You may reveal a creature card from among them instead if you control the creature with the greatest power or tied for the greatest power.

Your starting life is 24.
{X}, Discard a card: Create a token that's a copy of a creature card with mana value X chosen at random. If X is 11 or greater, choose a creature with mana value X or greater instead. Activate only as a sorcery and only once each turn.

Create a token that's a copy of target creature.
Agonize (You may cast this card from your graveyard by putting a -1/-1 counter on a creature you control in addition to paying its other costs. Then exile this card.)

Trample
Evergrowing Hydra enters with X +1/+1 counters on it.
Whenever another creature you control dies, you may pay {X}, where X is less than or equal to that creature's power. If you do, put X +1/+1 counters on Evergrowing Hydra.

Whenever this creature or another Citizen or Peasant you control enters, you may exile target card from a graveyard. If you exile a creature card this way, you gain 1 life.

Menace
When this creature dies, create two tapped 3/2 colorless Eldrazi creature tokens. Put a stun counter on one of them.