Swamp

Tragic Slip

Target creature gets -1/-1 until end of turn.
Morbid — That creature gets -13/-13 until end of turn instead if a creature died this turn.

Rupture Spire

This land enters tapped.
When this land enters, sacrifice it unless you pay {1}.
{T}: Add one mana of any color.

Necrogenesis

{2}: Exile target creature card from a graveyard. Create a 1/1 green Saproling creature token.

Deathgreeter

Whenever another creature dies, you may gain 1 life.

Gravetiller Wurm

Trample
Morbid — This creature enters with four +1/+1 counters on it if a creature died this turn.

Korozda Guildmage

{1}{B}{G}: Target creature gets +1/+1 and gains intimidate until end of turn. (It can't be blocked except by artifact creatures and/or creatures that share a color with it.)
{2}{B}{G}, Sacrifice a nontoken creature: Create X 1/1 green Saproling creature tokens, where X is the sacrificed creature's toughness.

Thorn-Thrash Viashino

Devour 2 (As this creature enters, you may sacrifice any number of creatures. It enters with twice that many +1/+1 counters on it.)
{G}: This creature gains trample until end of turn.

Badlands

Mountain

Vorrac Battlehorns

Equipped creature has trample and can't be blocked by more than one creature.
Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery. This card enters unattached and stays on the battlefield if the creature leaves.)

Elvish Visionary

Forest

Keldon Necropolis

{T}: Add {C}.
{4}{R}, {T}, Sacrifice a creature: Keldon Necropolis deals 2 damage to any target.

Brimstone Volley

Brimstone Volley deals 3 damage to any target.
Morbid — Brimstone Volley deals 5 damage instead if a creature died this turn.

Obelisk of Jund

Marrow Chomper

Devour 2 (As this creature enters, you may sacrifice any number of creatures. It enters with twice that many +1/+1 counters on it.)
When this creature enters, you gain 2 life for each creature it devoured.

Sprouting Thrinax

When this creature dies, create three 1/1 green Saproling creature tokens.

Scarland Thrinax

Sacrifice a creature: Put a +1/+1 counter on this creature.

Bayou

Jungle Hollow

This land enters tapped.
When this land enters, you gain 1 life.
{T}: Add {B} or {G}.

Hissing Iguanar

Whenever another creature dies, you may have this creature deal 1 damage to target player or planeswalker.

Jund Battlemage

{B}, {T}: Target player loses 1 life.
{G}, {T}: Create a 1/1 green Saproling creature token.

Rugged Highlands

This land enters tapped.
When this land enters, you gain 1 life.
{T}: Add {R} or {G}.

Dragon Appeasement

Skip your draw step.
Whenever you sacrifice a creature, you may draw a card.

Jeweled Bird

Remove this card from your deck before playing if you're not playing for ante.
{T}: Ante this artifact. If you do, put all other cards you own from the ante into your graveyard, then draw a card.

Rockslide Elemental

First strike
Whenever another creature dies, you may put a +1/+1 counter on this creature.

Grave Pact

Whenever a creature you control dies, each other player sacrifices a creature of their choice.

City of Shadows

{T}, Exile a creature you control: Put a storage counter on this land.
{T}: Add {C} for each storage counter on this land.

Golgari Rotwurm

{B}, Sacrifice a creature: Target player loses 1 life.

Sengir Autocrat

When this creature enters, create three 0/1 black Serf creature tokens.
When this creature leaves the battlefield, exile all Serf tokens.

Algae Gharial

Shroud (This creature can't be the target of spells or abilities.)
Whenever another creature dies, you may put a +1/+1 counter on this creature.