-1: Put a +1/+1 counter on each creature you control. Those creatures gain vigilance until end of turn.
-6: Create a white Avatar creature token. It has "This creature's power and toughness are each equal to your life total."
L:
4
{2}{W}{W}
Ajani, Adversary of Tyrants
Legendary Planeswalker - Ajani
+1: Put a +1/+1 counter on each of up to two target creatures.
-2: Return target creature card with mana value 2 or less from your graveyard to the battlefield.
-7: You get an emblem with "At the beginning of your end step, create three 1/1 white Cat creature tokens with lifelink."
L:
4
{4}{B}{G}
Garruk, Cursed Huntsman
Legendary Planeswalker - Garruk
0: Create two 2/2 black and green Wolf creature tokens with "When this creature dies, put a loyalty counter on each Garruk you control."
-3: Destroy target creature. Draw a card.
-6: You get an emblem with "Creatures you control get +3/+3 and have trample."
L:
5
{3}{G}{W}
Karametra, God of Harvests
Legendary Enchantment Creature - God
Indestructible
As long as your devotion to green and white is less than seven, Karametra isn't a creature.
Whenever you cast a creature spell, you may search your library for a Forest or Plains card, put it onto the battlefield tapped, then shuffle.
6 /
7
{2}{B}{R}{G}
Korvold, Fae-Cursed King
Legendary Creature - Dragon Noble
Flying
Whenever Korvold, Fae-Cursed King enters the battlefield or attacks, sacrifice another permanent.
Whenever you sacrifice a permanent, put a +1/+1 counter on Korvold and draw a card.
4 /
4
{3}{B}{G}
Mazirek, Kraul Death Priest
Legendary Creature - Insect Shaman
Flying
Whenever a player sacrifices another permanent, put a +1/+1 counter on each creature you control.
2 /
2
{3}{G}{G}
Plaguemaw Beast
Creature - Phyrexian Beast
{T}, Sacrifice a creature: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
4 /
3
{1}{B}
Priest of Forgotten Gods
Creature - Human Cleric
{T}, Sacrifice two other creatures: Any number of target players each lose 2 life and sacrifice a creature. You add {B}{B} and draw a card.
1 /
2
{3}{W}
Ranger of Eos
Creature - Human Soldier Ranger
When Ranger of Eos enters, you may search your library for up to two creature cards with mana value 1 or less, reveal them, put them into your hand, then shuffle.
3 /
2
{2}{W}
Recruiter of the Guard
Creature - Human Soldier
When Recruiter of the Guard enters the battlefield, you may search your library for a creature card with toughness 2 or less, reveal it, put it into your hand, then shuffle.
1 /
1
{1}{B}{G}
Savvy Hunter
Creature - Human Warrior
Whenever Savvy Hunter attacks or blocks, create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this artifact: You gain 3 life.")
Sacrifice two Foods: Draw a card.
3 /
3
{7}{G}
Stonehoof Chieftain
Creature - Centaur Warrior
Trample, indestructible
Whenever another creature you control attacks, it gains trample and indestructible until end of turn.
8 /
8
{3}{B}{G}
The Gitrog Monster
Legendary Creature - Frog Horror
Deathtouch
At the beginning of your upkeep, sacrifice The Gitrog Monster unless you sacrifice a land.
You may play an additional land on each of your turns.
Whenever one or more land cards are put into your graveyard from anywhere, draw a card.
6 /
6
{2}{B}
Victimize
Sorcery
Choose two target creature cards in your graveyard. Sacrifice a creature. If you do, return the chosen cards to the battlefield tapped.
{1}
Witch's Oven
Artifact
{T}, Sacrifice a creature: Create a Food token. If the sacrificed creature's toughness was 4 or greater, create two Food tokens instead. (They're artifacts with "{2}, {T}, Sacrifice this artifact: You gain 3 life.")
{4}{G}{G}
Woodland Bellower
Creature - Beast
When Woodland Bellower enters the battlefield, you may search your library for a nonlegendary green creature card with mana value 3 or less, put it onto the battlefield, then shuffle.
6 /
5
{6}{U}
Workshop Elders
Creature - Human Artificer
Artifact creatures you control have flying.
At the beginning of combat on your turn, you may have target noncreature artifact you control become a 0/0 artifact creature. If you do, put four +1/+1 counters on it.