msem-instigator

{2}, {T}: Tap target creature.

{1}: Put a -1/-1 counter on target creature you control. Untap that creature.

When Kinsang Butcher enters, create a Treasure token.
{1}, Sacrifice an artifact or another creature: Put a +1/+1 counter on Kinsang Butcher. Activate only as a sorcery.

Exile target artifact, creature, or enchantment. If that permanent's mana value was 3 or greater, its controller may search their library for a basic land card, put it onto the battlefield tapped, then shuffle. (A transformed permanent retains the mana value of its front face.)

Choose two —
• Create two 1/1 white Soldier creature tokens.
• Creatures you control get +1/+1 until end of turn.
• You gain 5 life.
• Choose a creature. It gains indestructible until end of turn.

Vigilance
Crinster Ranger enters with X +1/+1 counters on it, where X is the number of +1/+1 counters among other creatures you control.

Enchant creature
You control enchanted creature.

{T}: Add {C}.
{T}, Sacrifice a Clue: Draw a card.

Palace Hall enters tapped.
When Palace Hall enters, look at the top card of your library. You may put it into your graveyard.
{T}: Add {G} or {W}.

Trial 3 (As you cast this spell, an opponent of your choice may pay 3 life. If they don't, they fail the trial.)
Target creature gets +1/+0 and gains menace until end of turn. If the trial was failed, other creatures you control gain menace until end of turn.

Refuse to Submit deals 3 damage to any target. If that target is an attacking creature, it deals 5 damage instead.

Prismatic — Whenever you cast a multicolored spell, Thorny Bushwacker has base power and toughness 5/3 until end of turn.

Menace
{3}{B}, Discard a card: Unhallowed Singers gets +3/+0 until end of turn. Whenever it deals combat damage to a player this turn, they discard a card.

{4}{R}, Sacrifice Lavahurler: It deals 5 damage to target player or planeswalker.

(Choose only one work as a sorcery to add its ability.)
When Path of the Outsider enters, return target creature to its owner's hand, then each opponent sacrifices a creature.
{2}{U}: Evanescence
{0}: Target creature phases out. Activate only during your turn and only once each turn.
{2}{B}: Anguish
Whenever a creature attacks you, it gets -1/-1 until end of turn.

When All-Blossom Memorial enters, scry 1.
Prismatic — Whenever you cast a multicolored spell, you gain 1 life.
{T}: Add one mana of any color.

Cadence (Whenever you cast a spell, if its mana value is greater than this creature's power, put a +1/+1 counter on this creature.)
Whenever Irreguleopard deals combat damage to a player, permutate. (You may remove a counter from a creature you control. If you do, put two +1/+1 counters on a different creature you control.)

Draw two cards. You lose 2 life. Create a Treasure token. (It's an artifact with “{T}, Sacrifice this artifact: Add one mana of any color.”)

Harmony — Target creature gains haste until end of turn.
When Streetside Entertainer enters, harmonize. (Trigger up to one harmony of one permanent you control.)

Precursor Sanctum enters tapped. When it does, look at the top three cards of your library, exile one face down, then put the rest on the bottom of your library in any order.
{T}: Add {C}.
{4}, {T}: You may play the exiled card without paying its mana cost. Activate only as a sorcery.

When Risti Inquisitor enters, choose one —
• Destroy target enchantment.
• Put a +1/+1 counter on Risti Inquisitor.

Flying
{2/B}{2/B}, {T}, Sacrifice Meddling Gargoyle: Target opponent reveals their hand. You choose a nonland card from it. That player discards that card. Activate only as a sorcery.

Whenever another creature you control enters, if its power is greater than Scalebruiser's power, put a +1/+1 counter on Scalebruiser.
As long as Scalebruiser's power is 4 or greater, each other creature you control enters with an additional +1/+1 counter on it.

{B}{G}, {T}: Reveal the bottom card of your library and exile it. Target creature gets +X/-X until end of turn, where X is that card's mana value.

Vigilance
Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)