msem-instigator

Target creature you control deals damage equal to its power to target creature or planeswalker you don't control.
Compose (Then if you cast this from your hand, exile it and create a Saga token with “r3—You may cast a copy of this card from exile without paying its mana cost.”)

Draw two cards, then discard two cards if it's a combat step.
Quickdraw {U} (When a creature you control blocks or becomes blocked, you may cast this spell for {U}.)

Sprout Hermit can't attack unless you control a creature with power 4 or greater.
Attain {3}{G} ({3}{G}: Transform this. Spend at least three colors of mana to activate this, and only as a sorcery.)

Until end of turn, gain control of target creature and it gains haste and shimmer. Untap it. (Whenever it attacks this turn, create a tapped and attacking token that's a copy of it. Exile that token at the beginning of the end step.)

First mate—Each nonland card in your starting deck targets or has an ability that targets. (If this card outside the game is your chosen first mate, you may swap it with a card in your opening hand.)
Hexproof
Whenever a permanent you don't control becomes the target of a spell or ability you control, create a token that's a copy of that permanent.

When Bazaar Braggart enters, create a tapped Treasure token. (It's an artifact with “{T}, Sacrifice this artifact: Add one mana of any color.”)

Target creature gains double strike until end of turn. Mill a card.

Trample
Greypelt Ruffian gets +1/+1 as long as you control a storied permanent. (Enchantments and legendary permanents are storied.)

Flying, deathtouch
Whenever an opponent loses life for the first time each turn, that player loses 1 life and you gain 1 life.

Adorned — Visserine's Royal Guard has lifelink as long as it's equipped and/or enchanted.

Prowess
Gilded Gunman gets +1/+1 as long as you control an artifact.

For each Aura you control, create a token that's a copy of that Aura.

Flying
Charm Canary enters with a +1/+1 counter on it.
When Charm Canary leaves the battlefield, you may put a +1/+1 counter on target creature.

{T}, Sacrifice a creature: Conjure a card named Data-Point into your hand. Activate only as a sorcery. (It's a sorcery that costs {2} with “Draw a card.”)

Put two +1/+1 counters on target creature. Untap that creature.

({T}: Add {W}, {B}, or {G}.)
Majestic Dominion enters tapped.

Target player reveals their hand. You choose a nonland card from it. That player discards that card.(Cast a copy of this spell once while this creature is on the battlefield.)

Target player discards a card. If they can't, you draw a card and they lose 2 life.
Acquiesce (If you cast this spell from your hand, exile it as it resolves. When one or more creatures you control deal combat damage to an opponent, you may cast this card from exile without paying its mana cost.)

Shimmer (Whenever this creature attacks, create a tapped and attacking token that's a copy of it. Exile the token at the beginning of the end step.)

When Pantheon Breaker enters, each opponent sacrifices an enchantment.

Create a token that's a copy of target creature you control. Exile the token at the beginning of the next end step unless Glintwing Replica was cast from exile.
Prophecy {1}{U} (Once each turn, you may exile a card with prophecy as you reveal it. When you do, you may cast it for its prophecy cost as long as it's exiled.)

When Suburban Farmer enters, you may search your library for a basic Plains card, reveal it, put it into your hand, then shuffle.
When Suburban Farmer dies, you gain 3 life.

Flying, trample
Whenever an opponent casts a noncreature spell, that player loses 5 life unless they sacrifice a creature or discard a card.

Flying
Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)
Whenever Honorable Mentor mentors a creature, that creature and Honorable Mentor each gain first strike until end of turn.

Whenever Roaring Illusion attacks alone, for each other creature you control, create a token that's a copy of that creature and that's tapped and attacking. Exile those tokens at the beginning of the next end step.