msem-instigator

This spell costs {1} less to cast if it targets a creature with power 3 or less.
Destroy target attacking or blocking creature.

Create two 1/1 colorless Servo artifact creature tokens.
Leitmotif (If you cast this spell from your hand, exile it as it resolves. When you next cast a spell that shares a color with this card, you may cast this from exile without paying its mana cost.)

Target creature you control gets +1/+2 until end of turn. If that creature is white, create a white Aura enchantment token with enchant creature and “Enchanted creature has first strike” attached to that creature.

Create a 1/1 colorless Construct artifact creature token. If you control an artifact, create two of those tokens instead.

When Silkweaver Matron enters the battlefield, create a white Aura enchantment token named Spinning Silk attached to target creature. The token has enchant creature and “Whenever enchanted creature attacks, tap target creature defending player controls.”
{1}{W}: Untap target enchanted creature.

Destroy target artifact or enchantment. You gain 4 life.

Soulsmoke Adept gets +1/+0 and has lifelink as long as it's embattled. (A creature is embattled if it has a counter on it or has a permanent you control attached to it.)

Lifelink
Revive {W} ({W}, Exile this card from your graveyard: Create a token that's a copy of it except it has no mana cost. Revive only as a sorcery.)

Whenever a creature enters the battlefield under your control, if you didn't cast it from your hand, put a +1/+1 counter on it.
{3}{W}: Exile target creature you control, then return it to the battlefield under its owner's control.

Whenever a creature you control is dealt damage, put a +1/+1 counter on that creature.

When Zhedina Envoys leaves the battlefield, create two 1/1 Scout creature tokens that are all colors.

Draw three cards. Discard two cards at the beginning of the next end step.

Flash
When you cast Aether Ascendant, you may have it become a copy of target instant or sorcery spell. If you do, choose new targets for it. (Instant and sorcery spells don't enter the battlefield.)

Counter target spell. If a permanent spell is countered this way, create a Gold token. (It's an artifact with “Sacrifice this artifact: Add one mana of any color.”)

Create a 1/1 colorless Construct artifact creature token. If you control six or more artifacts, create a 6/6 colorless Golem artifact creature token instead.
Draw a card.

Artifact spells you cast cost {1} less to cast.
The first ability of an artifact you activate each turn costs {1} less.

Target player mills three cards for each artifact you control.

Enchant creature
Whenever enchanted creature deals damage to an opponent, you may draw a card.

Enchant creature
Enchanted creature doesn't untap during its controller's untap step.
At the beginning of the upkeep of enchanted creature's controller, that player mills a card.

Counter target spell unless its controller pays {2} plus an additional {2} for each card named Diffuse in your graveyard.

Enchant creature
When Duelist's Wings enters the battlefield, put two +1/+1 counters on enchanted creature.
Enchanted creature has flying.

When Ethereal Spellmaster enters the battlefield, if it was cast, you may search your library for an instant or sorcery card with mana value 3 or less and cast it without paying its mana cost. If you do, shuffle your library. (If it has X in its mana cost, X is 0.)

Flying
Vanishing (At the beginning of your upkeep, remove a time counter from this permanent. When the last is removed, sacrifice it.)
Ficklewing Elemental enters the battlefield with a time counter on it for each card in your hand.

Flying
Whenever another artifact enters the battlefield under your control, Filigree Drake gets +1/+1 until end of turn.

Exile two target artifacts, creatures, and/or lands you control, then return those cards to the battlefield under your control.