I Bask in Your Silent Awe

(An ongoing scheme remains face up until it's abandoned.)
Each opponent can't cast more than one spell each turn.
At the beginning of your upkeep, if no opponent cast a spell since your last turn ended, abandon this scheme.

What's Yours Is Now Mine

When you set this scheme in motion, gain control of target creature an opponent controls and untap it.

My Undead Horde Awakens

(An ongoing scheme remains face up until it's abandoned.)
At the beginning of your end step, you may put target creature card from an opponent's graveyard onto the battlefield under your control.
When a creature put onto the battlefield with this scheme dies, abandon this scheme.

Mortal Flesh Is Weak

When you set this scheme in motion, each opponent's life total becomes the lowest life total among your opponents.

Dark Wings Bring Your Downfall

(An ongoing scheme remains face up until it's abandoned.)
Whenever you attack, create a 5/5 black Demon creature token with flying that's tapped and attacking.
At the beginning of each end step, if two or more creatures died under your control this turn, abandon this scheme.

Plots That Span Centuries

When you set this scheme in motion, the next time you would set a scheme in motion, set three schemes in motion instead.

No One Will Hear Your Cries

When you set this scheme in motion, each opponent chooses a creature they control, then sacrifices the rest.

Behold the Power of Destruction

When you set this scheme in motion, destroy all nonland permanents target opponent controls.

I Am Untouchable

(An ongoing scheme remains face up until it's abandoned.)
You and permanents you control have hexproof.
When combat damage is dealt to you, create a 4/4 colorless Scarecrow artifact creature token with vigilance, then abandon this scheme.

My Genius Knows No Bounds

When you set this scheme in motion, you may pay {X}. If you do, you gain X life and draw X cards.

My Will Is Irresistible

When you set this scheme in motion, choose up to three nonland permanents you don't control. Target opponent chooses one of those permanents. You gain control of the rest.

Every Last Vestige Shall Rot

When you set this scheme in motion, you may pay {X}. If you do, put each nonland permanent target player controls with mana value X or less on the bottom of its owner's library.

I Am Duskmourn

(An ongoing scheme remains face up until it's abandoned.)
At the beginning of your end step, you may cast a spell from your hand without paying its mana cost. If you do, abandon this scheme.

My Wish Is Your Command

When you set this scheme in motion, each opponent reveals their hand. You may choose a noncreature, nonland card revealed this way and cast it without paying its mana cost.

Drench the Soil in Their Blood

When you set this scheme in motion, after this main phase, there is an additional combat phase followed by an additional main phase. Creatures you control gain vigilance until end of turn.

Mine Is the Only Truth

(An ongoing scheme remains face up until it's abandoned.)
Whenever a player casts a spell, you draw a card.
At the beginning of your upkeep, if you drew a card last turn, abandon this scheme.

I Know All, I See All

(An ongoing scheme remains face up until it's abandoned.)
Untap all permanents you control during each opponent's untap step.
At the beginning of each end step, if three or more cards were put into your graveyard this turn from anywhere, abandon this scheme.

Sauron, the Dark Lord

Ward—Sacrifice a legendary artifact or legendary creature.
Whenever an opponent casts a spell, amass Orcs 1.
Whenever an Army you control deals combat damage to a player, the Ring tempts you.
Whenever the Ring tempts you, you may discard your hand. If you do, draw four cards.

I Am Never Alone

When you set this scheme in motion, create a token that's a copy of your commander, except it's not legendary.

Embrace My Diabolical Vision

When you set this scheme in motion, each player shuffles their hand and graveyard into their library. You draw seven cards, then each other player draws four cards.

Imprison This Insolent Wretch

(An ongoing scheme remains face up until it's abandoned.)
When you set this scheme in motion, choose an opponent.
Permanents the chosen player controls don't untap during their untap step.
When the chosen player is attacked or becomes the target of a spell or ability, abandon this scheme.

Nature Shields Its Own

(An ongoing scheme remains face up until it's abandoned.)
Whenever a creature attacks and isn't blocked, if you're the defending player, create a 0/1 green Plant creature token that's blocking that creature.
When four or more creatures attack you, abandon this scheme at end of combat.

Perhaps You've Met My Cohort

When you set this scheme in motion, search your library for a planeswalker card, put it onto the battlefield, then shuffle your library.

The Dead Shall Serve

When you set this scheme in motion, for each opponent, put up to one target creature card from that player's graveyard onto the battlefield under your control. Each of those creatures attacks its owner each combat if able.

You Live Only Because I Will It

When you set this scheme in motion, you may redistribute any number of life totals. (Each affected player or team gets one of those life totals back.)

Dance, Pathetic Marionette

When you set this scheme in motion, each opponent reveals cards from the top of their library until they reveal a creature card. Choose one of the revealed creature cards and put it onto the battlefield under your control. Put all other cards revealed this way into their owners' graveyards.