msem-instigator

Flash
When Dragonwall Samurai enters, prevent all combat damage target creature would deal this turn.

Flying
Dragonwrought Engineer gets +1/+1 for each artifact and enchantment you control.

Flash
Flying
Whenever Dread Sacricolist enters or attacks, another target creature you control gets +1/+1 and gains flying until end of turn. Untap it.
Evoke {1}{W} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)

Put target attacking or blocking creature on the bottom of its owner's library.

Flash
If an opponent would draw one or more cards except during their draw step, instead they draw a card and you create that many 1/1 white Bird creature tokens with flying.

Flash
When Dreamnapper enters, another target creature phases out until Dreamnapper leaves the battlefield. (Treat it and anything attached to it as though they don't exist as long as it's phased out.)

Whenever an Aura you control enters, draw a card.
You may cast Aura spells from your graveyard if that card wasn't put into your graveyard this turn.

Vanishing 3 (This permanent enters with three time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)
Whenever Dregs of Order enters or a time counter is removed from it, exile target creature until Dregs of Order leaves the battlefield.

When Drifting Warden enters, exile another target creature until Drifting Warden leaves the battlefield.
{3}{W}: Exile Drifting Warden. Return it to the battlefield under its owner's control at the beginning of the end step.

Creatures you control get +1/+1 until end of turn. Merfolk you control get an additional +1/+1 until end of turn.

Enchant creature
Whenever enchanted creature becomes tapped, return it and Driven to Distraction to their owner's hands.

When Drown in Apathy enters, exile target creature until Drown in Apathy leaves the battlefield. If a permanent would be returned to the battlefield this way, put it in its owner's hand instead.

Lifelink
If you would gain life, you gain that much life plus 1 instead.

Destroy target creature that dealt damage to a creature you control this turn.

Untapped creatures you control get +1/+1.
Soldiers you control have vigilance.

Flying
When Dune Wraith enters, distribute two +1/+1 counters among Spirits you control.

Lifelink
Erratic (When this creature dies, reveal the top four cards of your library. Put a creature card that costs less than this revealed this way onto the battlefield and the rest on the bottom in a random order.)
Mirage {2}{W}{W} (You may cast this spell as though it had flash for its mirage cost. If you do, sacrifice it at the beginning of the next cleanup step.)

Whenever Dusk Insurgent perseveres, create a 1/1 white Warrior creature token. (A creature perseveres when it survives damage.)

Whenever Duskwatcher attacks, create a Function token with “Tap target creature.” (It's an enchantment. As you cast an instant or sorcery spell, sacrifice any number of Functions to add their effects to that spell.)

Dutiful Chasqui gets +2/+1 as long as you control two or more other creatures that share a name with it.
A deck can have any number of cards named Dutiful Chasqui.

When Dutiful Counselor enters, adjudicate. (Create a white Aura enchantment token with enchant creature and “Sacrifice this token: Untap enchanted creature” attached to target creature.)
Whenever an Aura you control enters, you may pay {1}. If you do, target creature gets +1/+1 until end of turn.

When Dynasty Infantry enters, choose one —
• Search your library for a card named Dynasty Infantry, reveal it, put it into your hand, then shuffle.
• Put a +1/+1 counter on target creature you control.

Experience (Whenever this creature attacks, if it has fewer than three +1/+1 counters on it, put a +1/+1 counter on it.)
When Eager Hatchling has three or more +1/+1 counters on it, remove them all and transform it.

Eager Observer gets +1/+1 as long as you control an artifact or enchantment.

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