Careful Study

Death

Return target creature card from your graveyard to the battlefield. You lose life equal to its mana value.

Life

All lands you control become 1/1 creatures until end of turn. They're still lands.

Life // Death

Dark Ritual

Sickening Dreams

As an additional cost to cast this spell, discard X cards.
Sickening Dreams deals X damage to each creature and each player.

Underground River

{T}: Add {C}.
{T}: Add {U} or {B}. This land deals 1 damage to you.

Multani, Maro-Sorcerer

Shroud (This creature can't be the target of spells or abilities.)
Multani's power and toughness are each equal to the total number of cards in all players' hands.

Naturalize

Putrid Imp

Discard a card: This creature gains flying until end of turn.
Threshold — As long as there are seven or more cards in your graveyard, this creature gets +1/+1 and can't block.

Cabal Therapy

Choose a nonland card name. Target player reveals their hand and discards all cards with that name.
Flashback—Sacrifice a creature. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Animate Dead

Enchant creature card in a graveyard
When this Aura enters, if it's on the battlefield, it loses "enchant creature card in a graveyard" and gains "enchant creature put onto the battlefield with this Aura." Return enchanted creature card to the battlefield under your control and attach this Aura to it. When this Aura leaves the battlefield, that creature's controller sacrifices it.
Enchanted creature gets -1/-0.

Reanimate

Put target creature card from a graveyard onto the battlefield under your control. You lose life equal to that card's mana value.

Oath of Druids

At the beginning of each player's upkeep, that player chooses target player who controls more creatures than they do and is their opponent. The first player may reveal cards from the top of their library until they reveal a creature card. If the first player does, that player puts that card onto the battlefield and all other cards revealed this way into their graveyard.

Undiscovered Paradise

{T}: Add one mana of any color. During your next untap step, as you untap your permanents, return this land to its owner's hand.

City of Brass

Whenever this land becomes tapped, it deals 1 damage to you.
{T}: Add one mana of any color.

Crumble

Destroy target artifact. It can't be regenerated. That artifact's controller gains life equal to its mana value.

Symbiotic Wurm

When this creature dies, create seven 1/1 green Insect creature tokens.

Visara the Dreadful

Flying
{T}: Destroy target creature. It can't be regenerated.

Lotus Petal

{T}, Sacrifice this artifact: Add one mana of any color.

Duress

Target opponent reveals their hand. You choose a noncreature, nonland card from it. That player discards that card.

Exhume

Each player puts a creature card from their graveyard onto the battlefield.

Phantom Nishoba

Trample
This creature enters with seven +1/+1 counters on it.
Whenever this creature deals damage, you gain that much life.
If damage would be dealt to this creature, prevent that damage. Remove a +1/+1 counter from this creature.

Gemstone Mine

This land enters with three mining counters on it.
{T}, Remove a mining counter from this land: Add one mana of any color. If there are no mining counters on this land, sacrifice it.

Akroma, Angel of Wrath

Flying, first strike, vigilance, trample, haste, protection from black and from red