Death Frenzy

All creatures get -2/-2 until end of turn. Whenever a creature dies this turn, you gain 1 life.

Archfiend of Depravity

Flying
At the beginning of each opponent's end step, that player chooses up to two creatures they control, then sacrifices the rest.

Satyr Wayfinder

When Satyr Wayfinder enters, reveal the top four cards of your library. You may put a land card from among them into your hand. Put the rest into your graveyard.

Necromancer's Assistant

When Necromancer's Assistant enters, mill three cards.

Grim Flowering

Draw a card for each creature card in your graveyard.

Reave Soul

Destroy target creature with power 3 or less.

Gravedigger

When Gravedigger enters, you may return target creature card from your graveyard to your hand.

Grave Strength

Choose target creature. Mill three cards, then put a +1/+1 counter on that creature for each creature card in your graveyard.

Forest

Scout the Borders

Reveal the top five cards of your library. You may put a creature or land card from among them into your hand. Put the rest into your graveyard.

Dutiful Attendant

When Dutiful Attendant dies, return another target creature card from your graveyard to your hand.

Conclave Naturalists

When Conclave Naturalists enters, you may destroy target artifact or enchantment.

Hunt the Weak

Put a +1/+1 counter on target creature you control. Then that creature fights target creature you don't control. (Each deals damage equal to its power to the other.)

Weight of the Underworld

Enchant creature
Enchanted creature gets -3/-2.

Swamp

Undergrowth Scavenger

Undergrowth Scavenger enters with a number of +1/+1 counters on it equal to the number of creature cards in all graveyards.

Vastwood Gorger

Jungle Hollow

Jungle Hollow enters tapped.
When Jungle Hollow enters, you gain 1 life.
{T}: Add {B} or {G}.

Witch's Familiar

Revenant

Flying
Revenant's power and toughness are each equal to the number of creature cards in your graveyard.