msem-instigator

When Dream Keeper enters, each player conjures a card named Fatigue and puts it on top of their library. (It's a colorless sorcery that costs {2} with “Draw a card.”)
Whenever a player draws a card except the first one they draw in each of their draw steps, each opponent mills a card.

As an additional cost to cast this spell, discard a card.
Draw two cards. Add one mana of any color.

Dreamchaser Djinni attacks each combat if able.

Choose one —
• Create two 1/1 black Worm creature tokens.
• Put up to two target cards from your graveyard on top or bottom of your library.

{1}{B}, Mill three cards: Return Dredging Aberration from your graveyard to your hand.

When Dregscape Wretch dies, create a 2/2 black Zombie creature token.

Enchant creature
Whenever a creature dealt damage by enchanted creature this turn dies, put a +1/+1 counter on enchanted creature.
When enchanted creature dies, draw a card.

When Drift Tracer enters, search your library for a basic land card that shares a type with a basic land you control and put it onto the battlefield tapped, then shuffle.

When Driftpicker enters, you may return another non-Crab creature you control to its owner's hand. If you do, create two 1/1 white Bird creature tokens with flying.

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

Whenever you cast a spell during an opponent's turn, creatures you control get +0/+1 until end of turn.

Gain control of target creature until end of turn. Untap it. It gets +2/+0 and gains haste until end of turn.

When Driver of Hordes enters, create a tapped 2/2 black Zombie creature token.
Unearth {3}{B} ({3}{B}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the end step or if it would leave the battlefield. Unearth only as a sorcery.)

First strike
{4}{W}, {T}: Target creature gets +2/+1 and gains first strike until end of turn. Activate only as a sorcery.

{2/G}, {T}: Put a +1/+1 counter on target creature you control.

Landfall — Whenever a land you control enters, target player loses 1 life and you gain 1 life.

Drown deals 2 damage to target creature. That creature can't block this turn.

Target player reveals their hand. You choose a nonland card from it. That player discards that card, then mills four cards.

{U}, Sacrifice a creature: Discard a card, then draw a card.

When Drownyard Scavenger enters, each player may return an instant or sorcery card from their graveyard to their hand.

Prevent all combat damage that would be dealt to you this turn. Populate. (Create a token that's a copy of a creature token you control.)

When Druid's Grimoire enters, create two 2/2 green Wolf creature tokens.
{T}: Add {G}.

Enchant creature
Enchanted creature doesn't untap during its controller's untap step.

Tap target creature.
Fabled {3}{U} (Then if you cast this for its fabled cost, put it onto the battlefield transformed attached to that creature.)

Reach