Enchanted Briarpatch
Creature — Plant
Defender
Whenever you cast an artifact, enchantment, or non-Human creature spell, put a +1/+1 counter on Enchanted Briarpatch.
Whenever Enchanted Briarpatch deals combat damage to a creature, you may remove a +1/+1 counter from it. If you do, that creature doesn't untap during its controller's next untap step.
0/2

Book of Fables —
Artifact (R)
Whenever a creature you control with an Adventure dies, you may exile it.
, : Put card exiled with Book of Fables into your graveyard and copy it. You may cast the copy as an Adventure without paying its mana cost.

Mother Hulg's Hut
Legendary Land
, Pay 1 life: Add or .
Whenever you cast a Warlock or Aura spell, Mother Hulg's Hut becomes a 3/3 Bird Wall artifact creature with lifelink until end of turn. It's still a land.
The hut runs wild on its chicken legs under the moonlight and wild magic soaks the ground.

Next is Ikoria.

Kudro's Stray —
Creature — Cat (U)
Mutate (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.)
First strike, vigilance, lifelink
0/1

Ride the Lightning

Enchantment (U)
When Ride the Lightning enters the battlefield, put a haste counter on target creature.
Whenever a creature you control with haste attacks, it deals 1 damage to defending player or planeswalker.

Oh, black. Right.

Rigorous Mortis

Sorcery (R)
Return target creature card with deathtouch from your graveyard to the battlefield. Repeat this process for flying, first strike, double strike, haste, hexproof, indestructible, lifelink, menace, reach, trample, and vigilance.

Ambusher Bonder
Creature — Human Shaman
First strike
If a creature you control with first strike would fight another creature, it deals damage equal to its power to that creature instead.
If a creature you control with double strike would fight another creature, it deals damage equal to its power to that creature twice instead.
2/1

Crystalline Flash —
Instant (U)
Target creature you control fights target creature you don't control. If the creature you control was mutated, draw a card.

Blitz Hunter

Creature -- Dinosaur Nightmare (R)
Haste
Whenever a creature with haste enters the battlefield under your control, you may pay . If you do, return Blitz Hunter from your graveyard to the battlefield.
2/1

Greater Farfinder
Creature — Fox Beast
Vigilance, trample
Whenever this creature enters the battlefield or mutates, search your library for up to two basic lands, put them onto the battlefield tapped, then shuffle.
5/5

Bonder’s Campfire
Land (U)
: Add .
Tap a Human and a non-Human creature you control: Untap Bonder’s Campfire.

Mirrodin/New Phyrexia

The Flesh Singularity
Enchantment
Each creature you control with a -1/-1 counter has the abilities of each other creature you control with a -1/-1 counter.
"The Machine Orthodoxy shall engorge the Not-Whole and their deficient isolation shall be obliterated in the Unity. Only then shall the last wounds in the Circle be healed. Only then shall this world compleat itself." —Izathel, High Chancellor

Venser, Deliverance of Phyrexia
Legendary Artifact Creature — Artificer
: Return artifact or creature spell you control to its owner's hand. Put a charge counter on Venser.
, Remove five charge counters from Venser: Put any number of artifact and/or creature cards from your hand onto the battlefield.
"He will carve the path. He will build the bridge. He will deliver our message to worlds beyond." — Elesh Norn
2/2

Blood Defiant
Creature — Vampire
Lifelink
When Blood Defiant enters the battlefield, remove up to one counter from any number of permanents and/or players. Then put a +1/+1 counter on Blood Defiant for each counter removed this way.
Ichor is just another bodily fluid.
3/3

Final Spasms
Instant
Double the amount of each type of unspent mana you have. At the beginning of your next end step, you get ten poison counters.
The sun is brightest before the dusk.

Doubling Cube

Uncontrolled Growth -
Enchantment - Aura
Enchant land
Enchanted land has “ : Add two mana of any one color.”
Metalcraft - As long as you control three or more artifacts, enchanted land has “ : Add three mana of any one color.”

Sacraments in Oil
Sorcery
Destroy target creature if its converted mana cost is equal to or less than the amount of life you lost this turn.
"You were born imperfect but you can be made sacred."

Slagmaw, Rebel Encampment
Land
, Pay 1 life: Add . If this mana is spent on a creature spell, that creature enters the battlefield with an additional -1/-1 counter on it and it gains haste.
In the belly of the Furnace Layer, the Mirran resistance carve out something that cannot be called living but surviving...surviving is enough for now.

Next is Kamigawa