Every Dream a Nightmare

When you set this scheme in motion, each opponent discards a card. You draw a card for each land card discarded this way.

No One Will Hear Your Cries

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

Delight in the Hunt

When you set this scheme in motion, create a 3/3 black Horror creature token and prevent all damage that would be dealt to creatures you control this turn.

My Forces Are Innumerable

(An ongoing scheme remains face up until it's abandoned.)
At the beginning of your end step, create a 3/3 black Horror creature token.
At the beginning of your opponents' end step, they may sacrifice two creatures of their choice. If they do, abandon this scheme.

Power Without Equal

When you set this scheme in motion, draw three cards. You have no maximum hand size until your next turn. If you control six or more lands, you may cast up to three spells from your hand without paying their mana costs.

Know Evil

When you set this scheme in motion, until your next turn, up to one target opponent can't attack with creatures, up to one target opponent can't cast creature spells, and up to one target opponent can't cast noncreature spells. You can't choose any player as a target more than once.

Because I Have Willed It

(An ongoing scheme remains face up until it's abandoned.)
Spells you cast cost {1} less to cast.
At the beginning of your opponents' end step, if they cast four or more spells this turn, abandon this scheme.

There Is No Refuge

When you set this scheme in motion, it deals 3 damage to up to one target creature. Create a 3/3 black Horror creature token.

My Laughter Echoes

(An ongoing scheme remains face up until it's abandoned.)
Whenever you set a non-ongoing scheme in motion, you may abandon this scheme. If you do, set that scheme in motion again.

The Mighty Will Fall

When you set this scheme in motion, choose an opponent with the highest life total among your opponents. That player loses 7 life.

Behold My Grandeur

When you set this scheme in motion, add {U}{B}{R}.
When you set this scheme in motion, if you control six or more lands, you may search your library for a card with mana value 6 or greater, reveal it, put it into your hand, then shuffle.

Pay Tribute to Me

When you set this scheme in motion, each opponent sacrifices a creature of their choice. If you control six or more lands, each opponent sacrifices another creature of their choice.

Horror

Choose Your Demise

When you set this scheme in motion, look at the top four cards of your library and separate them into a face-down pile and a face-up pile. An opponent chooses one of those piles. Put the cards in that pile into your hand and the rest on the bottom of your library in any order.

For Each of You, a Gift

When you set this scheme in motion, for each opponent, create a 3/3 black Horror creature token that attacks that player each combat if able.

This World Belongs to Me

When you set this scheme in motion, draw two cards. You may play an additional land this turn.

What's Yours Is Now Mine

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

When Will You Learn?

When you set this scheme in motion, each opponent exiles the top card of their library. You may cast any number of spells from among cards exiled this way without paying their mana costs.

Make Yourself Useful

When you set this scheme in motion, destroy target creature an opponent controls. If a creature is destroyed this way, you gain life equal to its toughness.

A Reckoning Approaches

When you set this scheme in motion, look at the top six cards of your library. You may put a creature card from among them onto the battlefield. Put the rest on the bottom of your library in any order.

Bow to My Command

(An ongoing scheme remains face up until it's abandoned.)
As you set this scheme in motion, choose an opponent.
Creatures the chosen player controls can't attack you or planeswalkers you control.
At the beginning of your opponents' end step, they may tap any number of untapped creatures they control with total power 8 or greater. If they do, abandon this scheme.