msem-instigator

Trial 3 (As you cast this spell, an opponent of your choice may pay 3 life. If they don't, they fail the trial.)
When Devilish Undoer enters the battlefield, if the trial was failed, return target creature card from your graveyard to your hand.

Flash
When Devious Naiad enters the battlefield, exchange control of it and target creature until end of turn. Untap that creature. It gains haste until end of turn.

Whenever a storied permanent enters the battlefield under your control, you gain 1 life and each opponent loses 1 life. (Enchantments and legendary permanents are storied.)

Whenever a creature you control assaults, put a +1/+1 counter on Devoted Nomad.

Target player discards two cards.
Coalesce {8}{B} (You may cast this from your graveyard for {8}{B}. If you do, put it onto the battlefield as a Horror creature after it resolves. Exile it if it would leave the battlefield or not resolve.)

Whenever Devourer of Legacy deals combat damage to a player, you may sacrifice it and choose a nonland card name. If you do, search that player's graveyard, hand, and library for any number of cards with that name and exile them. That player shuffles, then draws a card for each card exiled from their hand this way.

Haste
{6}{R}: Diasune Immolator deals 4 damage to target player or planeswalker.

Hexproof

When Diligent Analyst enters the battlefield, you may put an progress counter on a Project you control.
Diligent Analyst gets +1/+1 as long as you control two or more enchantments.

{3}{W}{W}: Detain target nonland permanent. (Until your next turn, that permanent can't attack or block and its activated abilities can't be activated.)

Disciple of Atemhar has lifelink as long as it has a +1/+1 counter on it.

{4}, {T}: Add {W}{U}{B}{R}{G}.

Whenever Dissenting Vikings attacks, if you control another Warrior, it gets +1/+0 until end of turn and deals 1 damage to defending player.

Trample

When Div of Bonded Souls enters the battlefield, create a 1/1 colorless Illusion creature token with “This creature is every creature type.”
Whenever a creature you control attacks, it gets +1/+0 until end of turn for each other attacking creature that shares a creature type with it.

Trample

When Divine Theurge enters the battlefield, choose one —
• Return target enchantment card from your graveyard to your hand.
• Return target creature card with power 2 or less from your graveyard to your hand.

When Diviner of the Mists enters the battlefield, 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 the battlefield, create a 2/2 green Hound creature token.
Whenever a land enters the battlefield under your control, put a +1/+1 counter on Dogged Pioneer and up to one target Hound.

Concord — When Dolphin Rider enters the battlefield, if there are four or more card types among permanents you control, you gain 5 life.

Haste
When Doomed Alchemist dies, create two Treasure tokens. (They're artifacts with “{T}, Sacrifice this artifact: Add one mana of any color.”)

Menace
Whenever a creature you control with power 4 or greater attacks, it gains menace until end of turn.