msem-instigator

Flying
Demons and Vampires you control get +1/+1 for each player that has lost life this turn.

When Diviner of the Mists enters, target opponent chooses two cards in their hand and reveals one of them. Exile one of those cards. You may play that card for as long as it remains exiled, and spend mana as though it were mana of any color to cast it.

{B}, Remove a time counter from a permanent you control: Target player loses 1 life.

At the beginning of your end step, if you have no cards in hand, draw a card.
{2}{U}, {T}: Sacrifice any number of nontoken creatures. Create an X/X blue Horror creature token for each of those creatures, where X is the total power of those creatures.

Trample
When Dogged Pioneer enters, create a 2/2 green Hound creature token.
Whenever a land you control enters, put a +1/+1 counter on Dogged Pioneer and up to one target Hound.

When Doom Cultist dies, target player loses 2 life and you gain 2 life.

First strike, haste
Whenever you cast a spell, Double-Edged Duelist gains double strike until end of turn if that spell has the same name as a card in your graveyard.

Other creatures you control get +1/+1.
Lands you control enter tapped.

First mate — Twelve or more cards in your starting deck have “gain control” or “exchange control” in their printed rules text. (If this card outside the game is your chosen first mate, you may swap it with a card in your opening hand.)
Dr. Telsi of the Ark can't be blocked.
Dr. Telsi gets +1/+1 for each permanent you control but don't own.

Defender, flying
Whenever you cast a noncreature spell, Dragon Initiate gets +2/+0 and loses defender until end of turn.

Dominance — When Dragon Queen's Pupil enters, put a +1/+1 counter on it if you control the creature with the greatest power or tied for the greatest power.

Instant, sorcery, and Dragon cadence (Whenever you cast an instant, sorcery or Dragon spell, if its mana value is greater than this creature's power, put a +1/+1 counter on this creature.)
{R}, {T}, Discard a card: Draw a card.

Prowess
Whenever Dragon's Eye Spiritualist attacks, the next spell you cast this turn costs {1} less to cast.

Spirited (When this creature enters, you may activate one of its activated abilities without paying its cost.)
{3}{R}: When target creature dies this turn, create a 2/2 red Dragon creature token with flying and “{R}: This creature gets +1/+0 until end of turn.”

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

Flying (This creature can't be blocked except by creatures with flying or reach.)
When Drake Youngling enters, draw a card.

Flying
Ride {3}{U} ({3}{U}: Transform this and attach it to target creature you control without a Steed. Ride only as a sorcery.)

{1}, Sacrifice another creature: Put a +1/+1 counter on Dread Cabalist and on up to one target legendary creature. Activate only as a sorcery.

Flying
When Dreadstone Watcher dies, investigate. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)

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.

You may look at the top card of your library any time.
You may play the top card of your library if it's a land card or a creature card with power 2 or less.

Flying
Whenever you cast a spell during an opponent's turn, Drosera and Nerium deals 1 damage to each opponent.
As long as Drosera and Nerium is tapped, you may cast spells as though they had flash.

Whenever you cast a blue spell, you may cast creature spells this turn as though they had flash.
Whenever you cast a black spell, put up to one target card from your graveyard on top of your library.

Haste
Ward—Pay 3 life.
{R}, Tap an untapped artifact you control: Drysand Mole gets +1/+0 until end of turn. Up to one target creature can't block it this turn.