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.

Your Own Face Mocks You

When you set this scheme in motion, choose up to two target creatures your opponents control. For each one, create a token that's a copy of it. If you created fewer than two tokens this way, create a number of 4/4 colorless Scarecrow artifact creature tokens with vigilance equal to the difference.

Fear My Authority

(An ongoing scheme remains face up until it's abandoned.)
Creatures you control get +2/+2 and have fear. (They can't be blocked except by artifact creatures and/or black creatures.)
At the beginning of your upkeep, abandon this scheme unless you discard a card or pay 3 life.

Your Plans Mean Nothing

When you set this scheme in motion, any number of target players each discard their hands. Each opponent draws cards equal to the number of cards that player discarded minus one. Then if you discarded a card this way, draw seven cards.

Time Bends to My Will

When you set this scheme in motion, take an extra turn after this one. Skip the untap step of that turn.

Choose Your Champion

When you set this scheme in motion, target opponent chooses a player. Until your next turn, only you and the chosen player can cast spells and attack with creatures.

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.

Kneel Before My Legions

When you set this scheme in motion, choose one —
• Create a 4/4 colorless Scarecrow artifact creature token with vigilance.
• Creatures you control get +3/+3 and gain vigilance and trample until end of turn.

I Will Savor Your Agony

When you set this scheme in motion, choose three. You may choose the same mode more than once.
• Destroy target creature.
• Target player draws a card.
• Target player gains 5 life.

Your Mistake Is My Triumph

When you set this scheme in motion, each player mills three cards. Then you put a permanent card from among the milled cards onto the battlefield under your control.

May Civilization Collapse

When you set this scheme in motion, target opponent chooses self or others. If that player chooses self, that player sacrifices two lands of their choice. If the player chooses others, each of your other opponents sacrifices a land of their choice.

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.)

Every Hope Shall Vanish

When you set this scheme in motion, each opponent reveals their hand. Choose a nonland card from each of those hands. Those players discard those cards.

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.

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.

My Tendrils Run Deep

(An ongoing scheme remains face up until it's abandoned.)
You may play an additional land on each of your turns.
At the beginning of your end step, if you control six or more lands, draw two cards, then abandon this scheme.

Running Is Useless

When you set this scheme in motion, choose any number of creatures with different mana values. Destroy those creatures.

All in Good Time

When you set this scheme in motion, take an extra turn after this one. Schemes can't be set in motion that turn.

Surrender Your Thoughts

When you set this scheme in motion, target opponent chooses self or others. If that player chooses self, that player discards four cards. If the player chooses others, each of your other opponents discards two cards.

My Champion Stands Supreme

(An ongoing scheme remains face up until it's abandoned.)
Your commander has ward {2}.
Whenever your commander attacks, put two +1/+1 counters on it.
When your commander leaves the battlefield, abandon this scheme.

I Call for Slaughter

When you set this scheme in motion, create three 1/1 red Devil creature tokens with "When this creature dies, it deals 1 damage to any target." They gain haste until end of turn. If a source you control would deal damage this turn, it deals that much damage plus 1 instead.

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.

My Wealth Will Bury You

When you set this scheme in motion, create a number of Treasure tokens equal to the number of artifacts and enchantments your opponents control. If they control fewer than four artifacts and enchantments, create four Treasure tokens instead. (Treasure tokens are artifacts with "{T}, Sacrifice this artifact: Add one mana of any color.")

My Crushing Masterstroke

When you set this scheme in motion, gain control of all nonland permanents your opponents control until end of turn. Untap those permanents. They gain haste until end of turn. Each of them attacks its owner this turn if able.

Behold the Power of Destruction

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

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.

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.

You Exist Only to Amuse

When you set this scheme in motion, choose one. If you control six or more lands, choose both instead.
• Create three 1/1 red Devil creature tokens with "When this creature dies, it deals 1 damage to any target."
• Until your next turn, creatures your opponents control have base power and toughness 1/1 and lose all abilities.

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.

Realms Befitting My Majesty

When you set this scheme in motion, search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.