Octet of Octopi

Instant
Create eight 1/1 blue octopus creature tokens with "Sacrifice this creature: counter target spell unless its controller pays "

Forbidden Archives —
Sorcery (R)
Reveal cards from the top of your library until you reveal X nonland cards or you choose to stop. You lose 1 life for each card revealed this way. Put X of them into your hand and the rest on the bottom of your library in a random order.

The Lonely Dead-
Creature-Zombie
As long as you control no other creatures, The Lonely Dead gets +1/+1.
As long as you control no other non-Zombie creatures, The Lonely Dead gets +1/+1.
"The wretched thing wailed in the emptiness of the tundra, guided not by its mind but by its hunger for something much deeper. I almost feel sorry for it. Even the dead don't deserve this."~Essel, survivor
1/1

Spiteful Husk
Creature - Insect Skeleton
~ can't die unless another creature died this turn.
Even when faced with the certainty of the Abyss, the creature that Essel had known in its life refused to heed its call until it had exacted vengeance.
[2/2]

Last Rites
Sorcery
Choose one:

• Destroy all creatures.
• Return a creature from your graveyard to the battlefield.

Entwine

Liliana, Taker of Lich's Vow —
Planeswalker — (R)
Your life total is equal to the number of loyalty counters on Liliana, Taker of Lich's Vow.
: Sacrifice a permanent.
: Draw a card.
: Destroy target creature or planeswalker.

Grudge Demon
Creature - Demon
Menace
At the beginning of your upkeep, you may move a counter from ~ onto another target creature.
Persist
[5/4]

Triumph of the Summoned —
Sorcery (R)
Convoke
Destroy all creatures with mana value equal to or less than the number of creatures tapped to cast Triumph of the Summoned.
For the clerics, an unfortunate twist of fate. For the demon, a tasty snack.

Revivify
Sorcery
~ costs less to cast for each creature that died this turn.
Return target creature card in target player's graveyard to the battlefield.

Mine the Vein —
Sorcery (R)
Sacrifice a land. If you do, create two Treasure tokens.

Sparkhunter Elemental
Creature - Elemental
Haste
Whenever ~ becomes blocked, sacrifice it. If you do, it deals damage equal to its power to defending player.
[3/1]

Festival of the Coronel —
Enchantment — Saga (U)
I, II, III, IV - Add for each lore counter on Festival of the Coronel.

Indignify
Sorcery
Untap target creature and gain control of it until end of turn. It gains haste until end of turn.
Recover - Discard an instant or sorcery card.
"All it takes to start a revolt is to make the citizens believe they deserve better."

Sarkhan, Khanfall Anomaly
Planeswalker - Sarkhan
: Create a 4/4 red Dragon creature with Flying and Haste. Exile at the beginning of the next end step.
: ~ deals 2 damage to target creature or planeswalker.
: Take an extra turn after this one. At the end of that turn, you lose the game unless you control a Sarkhan planeswalker.

Dagron, Abyssal Revolutionist
Legendary Creature - Devil Dragon
Flying, Haste
: ~ gets +1/+0 until end of turn.
: ~ gets First Strike until end of turn.
: Gain control of target spell that targets Dagron. You may choose new modes and new targets for it.
[4/4]

Grazarax the Devastator

Legendary Creature - Ogre Mutant
Trample
When Grazarax the Devastator enters the battlefield or attacks, sacrifice a land
Whenever Grazarax the Devastator deals combat damage to a player, that player sacrifices that many lands.
7/5

The Ninety-Day Riot —
Enchantment — Saga (M)
Precis (This saga enters the battlefield with an additional lore counter for each mana greater than four you spent to cast it.)
I, II, III, IV - Untap target creature. It gains haste. You gain control of it until end of turn.
V - Creatures you control get +3/+3 and gain trample until end of turn.

So ... I noticed the rules say to go to CMC 10 then swap, but honestly I feel like the design space past CMC 8 is ... pretty limiting ... plus we already set a precedent for Black this cycle so CMC 1 Green it is!

Fruit-Bearing Dryad
Creature - Dryad
~ gets +1/+0 and hexproof as long as it is tapped.
: Add
[0/1]

Dryad Umbra —
Enchantment — Aura (U)
Enchant land
Enchanted land is a 2/2 creature with haste that's still a land.
Totem armor

Lorax, Speaker of Trees
Legendary Creature - Beast
When ~ enters the battlefield, untap each Forest you control.
Whenever a Dryad you control deals combat damage to a player, you may draw a card, then you may play an additional land this turn. This ability triggers only once per turn.
Forests you control are 1/1 green Dryad creatures with haste and indestructible in addition to their other types.
[2/2]