msem-instigator

Flash
When CySec Disruptor enters, if it was cast, target opponent conjures a card named Data-Point on top of their library. (It's a sorcery that costs {2} with “Draw a card.”)

When CySec Moderation Council enters, choose a nontoken enchantment you control or an enchantment card in your graveyard. Conjure a duplicate of that card into your hand.

Breach (Whenever this deals combat damage to a player, you may have it become an Aura Curse until your next turn. Attach it to that player.)
Whenever a cursed opponent attacks, you may draw a card.

When Cyone, Expedition Captain enters, create a 1/1 Scout creature token that's all colors, then choose flying, first strike, or lifelink. Creature tokens you control gain the chosen ability until end of turn.
Whenever Cyone attacks, aetherize it. (To aetherize, create a token that's a copy of it, then exile that token.)

Vigilance
When Cyrukan Guardians enters, recruit. (Create a 0/0 white Soldier Army creature token, then put a +1/+1 counter on each Army you control.)

Flying
When Cyrukan's Messenger enters, you may search your library for an Equipment card, reveal it, put it into your hand, then shuffle.
Whenever Cyrukan's Messenger attacks, you may put an Equipment card from your hand onto the battlefield attached to Cyrukan's Messenger.

Flying
Whenever DC-4 Cutie enters or attacks, choose target creature card with mana value 3 or less in your graveyard. You may cast it this turn.
Crew 2

Breach (Whenever this deals combat damage to a player, you may have it become an Aura Curse until your next turn. Attach it to that player.)
At the beginning of your end step, you may choose a cursed opponent. If you do, draw a card unless that player pays 2 life for each Curse attached to them.

Dafiqi Falconer gets +X/+X, where X is the amount of life you've gained this turn.
As long as your life total is greater than your starting life total, Dafiqi Falconer has flying.

Identity — As long as you control at least two other creatures that share a creature type with Danuri Eaglerider, Danuri Eaglerider gets +1/+2 and has flying.

At the beginning of each opponent's upkeep, exile Daril's Timewalker and up to one other target nonland permanent you control, then return those cards to the battlefield under their owner's control.

When Dark Apprentice enters, mill three cards, then return a creature card from your graveyard to your hand.

First strike (This creature deals combat damage before creatures without first strike.)

Trample, haste
When Dashing Rager enters, attach all Equipment on the battlefield to it. (Control of the Equipment doesn't change.)
At the beginning of the end step, sacrifice Dashing Rager.

This spell costs {2} less to cast if an opponent was dealt combat damage this turn.
When Dastardly Duo enters, audition for black. (Create a 1/1 Construct Actor creature token, a Cleric Role giving 2/2 and lifelink, or a Warlock Role giving 2/1 and flying. Roles replace older ones.)

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)
Whenever a creature an opponent controls dies, its controller discards a card and loses 1 life.
{1}{B}{B}, {T}, Sacrifice another creature: Destroy target creature.

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.

Whenever Dawn Hill Daybreaker or another creature you control enters, you gain 1 life. If that creature is a Cleric, tap up to one target creature an opponent controls.

Whenever Dawnrise Attendants attacks, put a +1/+1 counter on any number of target creatures that entered this turn.

Haste
Slipstream (This creature can't be blocked as long as only creatures with slipstream are attacking.)
Spend only mana produced by artifacts to cast Dawson's Jetslicer.

Dawson's Marauder can't block.
When Dawson's Marauder attacks, it can't be blocked this turn unless defending player sacrifices an artifact.

Augmented — When Dead End Adventurer enters, if you've spent {W}{U}{B}{R}{G} to cast spells this turn, destroy target creature you don't control.

Engorge (As this enters, mill three cards, then exile a card from among the milled cards.)
When Deadland Summoner dies, you may put the card it engorged into your hand. If that card is an instant or sorcery card, you may instead cast it without paying its mana cost.

When Death's Sentry enters, if a creature died this turn, create a 2/2 black Zombie creature token.

Deathtouch
When Deathbed Confessor enters, if it entered from a graveyard or you cast it from a graveyard, you draw two cards and you lose 2 life.