That's some dark subject matter, are you feeling ok?

Something for the EDHers
Alexander, the Conqueror
Legendary Creature - Human Warrior
: Alexander, the Conqueror fights target creature. When that creature dies this turn, return it to the battlefield under your control.
Alexander, the Conqueror gets +1/+1 for each permanent you control but don't own.
3/3
His old rivals are his most loyal followers.

Double Down
Instant
Counter target spell unless its controller pays , where X is that spell's mana value.

Rethink might be more balanced

I did not know that that card existed

New Regime
Instant
Destroy up to one target artifact or enchantment. Search your library for an artifact or enchantment card, reveal it, put it into your hand, then shuffle your library.
The statue of Concordat was toppled and melted down to form the people's memorial.

some cards for Nichet, my old storm/suspend/privilege set

Highborn Occultist
Creature - Human Warlock (U)
Privilege - When highborn occultist blocks or becomes blocked, add to your mana pool. Until end of turn, you don't lose this mana as steps and phases end.
Dabbling in the dark arts was a popular hobby among the aristocratic class. With the advent of the revolution, many turned their knowledge to more sinister ends.
2/1

Mana Serpent
Creature - Elemental Snake (C)
When Mana Serpent enters the battlefield, add .
Suspend 3
3/3

Nethershock
Sorcery (U)
Nethershock deals 2 damage to any target.

Dark Ritual reprint

black border Crowstorm reprint

Opportunist
Creature - Human Advisor (C)
Flash
When Netherborn Trickster enters the battlefield, tap or untap target permanent.
1/1
Sometimes a little push is all it takes to change the course of history.

Chronomancer
Creature - Human Wizard (R)
At the beginning of your upkeep, if you control Chronomancer or it's suspended, you may remove a time counter from another suspended card.
4/5
Suspend 5

Affluent Merchant
Creature - Human (C)
Affluent Merchant gets +1/+1 for each triggered ability that has triggered this turn.
2/3
The tide of history creates new opportunities for those canny enough to take them.

Wealth Hoarder
Creature - Human Noble (C)
Privilege - Whenever Wealth Hoarder blocks or becomes blocked, create a treasure token.
3/2

Outsmart
Instant
Counter target spell unless its controller pays for each card in your hand.

Sorry this one already exists too

What if it counted the controller’s hand?

that would be weird since you have little control over your opponent's hand size compared to your own.

Yeah I know, I checked scryfall after flopfoot posted

Blood Offering
Instant
Destroy target creature. Return a creature with mana value less than or equal to that creature from your graveyard to the battlefield.
Vampires are famished when they first awaken, ravenous with the urge to feed.

Essence Offering
Instant
Return target creature to its owner's hand. You may put a creature card from your hand with mana value less than or equal to that creature onto the battlefield.

Mana Offering
Instant
Counter target noncreature spell. You may cast a noncreature, nonland card from your hand with mana value less than or equal to that spell without paying its mana cost.

Disturbing Dreams
Sorcery
Each opponent discards a card for each tapped creature they control. Those creatures don't untap during their controllers' next untap steps.

"Omniaegis: Choose either creatures or players gain protection from everything until end of turn."

Found the control player

Cunning Opportunist
Creature - Human Assassin
If Cunning Opportunist would deal damage to a tapped creature or a player with no untapped lands, it deals twice that much damage instead.
2/2

Trivia: blocking creatures used to deal no damage if they were tapped (back when Master of Arms was printed)

Flora and Fauna
Sorcery
Search your library for a land card and a creature card with mana value 3 or less and put them onto the battlefield. Then, shuffle your library and exile Flora and Faun.