Remove all counters from all permanents and exile all tokens.

Enchant creature card in a graveyard

When Animate Dead enters the battlefield, if it's on the battlefield, it loses "enchant creature card in a graveyard" and gains "enchant creature put onto the battlefield with Animate Dead." Return enchanted creature card to the battlefield under your control and attach Animate Dead to it. When Animate Dead leaves the battlefield, that creature's controller sacrifices it.

Enchanted creature gets -1/-0.

{T}: Add {C}.

{1}, {T}: Until end of turn, creatures your opponents control lose hexproof and shroud and can't have hexproof or shroud.

Each player sacrifices two creatures.

Discard your hand. Search your library for three cards, put them into your hand, then shuffle.

Put X -1/-1 counters on each creature. Shuffle Black Sun's Zenith into its owner's library.

Bojuka Bog enters the battlefield tapped.

When Bojuka Bog enters the battlefield, exile target player's graveyard.

{T}: Add {B}.

At the beginning of each player's upkeep, that player discards a card at random.

Search your library for up to three creature cards, put them into your graveyard, then shuffle.

Council's dilemma -- Starting with you, each player votes for death or taxes. Each opponent sacrifices a creature for each death vote and discards a card for each taxes vote.

Target player sacrifices a creature.

Flashback {5}{B}{B} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Target opponent chooses a number. You may have that player lose that much life. If you don't, that player sacrifices all but that many permanents.

Destroy each creature with mana value 3 or less. They can't be regenerated.

Target opponent sacrifices a creature.

Exile all creature cards from target player's graveyard. You gain 3 life for each card exiled this way.

Undaunted (This spell costs {1} less to cast for each opponent.)

Destroy two target creatures.

Each player discards all the cards in their hand, then draws that many cards minus one.

Add {B}{B}{B}.

Search your library for a card, put that card into your hand, then shuffle.

{T}: Add {C}.

{1}, {T}: Until end of turn, your opponents and creatures your opponents control with hexproof can be the targets of spells and abilities you control as though they didn't have hexproof.

Target player sacrifices a creature.

Search your library for a card, put that card into your hand, then shuffle.

({B/P} can be paid with either {B} or 2 life.)

Target creature gets -5/-5 until end of turn.

Destroy target nonblack creature.

Enchant creature

You control enchanted creature.

At the beginning of your upkeep, enchanted creature deals 1 damage to its owner.

Search your library for a card, put that card into your graveyard, then shuffle.

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

{T}: Add three mana of any one color.

Destroy target nonartifact creature.

{B}, Pay 2 life: Draw a card.

Choose target creature card in a graveyard that was put there from the battlefield this turn. Put that card onto the battlefield under your control.

Change the target of target spell with a single target. You lose life equal to that spell's mana value.

Target opponent chooses a creature they control. Destroy that creature.

Each player sacrifices a creature.

For each creature, its controller sacrifices it unless they pay X life.

Destroy all creatures, then search target opponent's library for up to three creature cards and put them into their graveyard. Then that player shuffles.

Equipped creature has haste and shroud. (It can't be the target of spells or abilities.)

Equip {0}

{T}: Untap target attacking creature. Prevent all combat damage that would be dealt to and dealt by that creature this turn.

Look at the top five cards of your library. For each card, put that card into your graveyard unless you pay 2 life. Then put the rest into your hand.

Destroy target creature.

At the beginning of each player's upkeep, that player discards a card.

Skip your draw step.

Whenever you discard a card, exile that card from your graveyard.

Pay 1 life: Exile the top card of your library face down. Put that card into your hand at the beginning of your next end step.

As long as Necrotic Ooze is on the battlefield, it has all activated abilities of all creature cards in all graveyards.

You draw two cards and you lose 2 life.

Whenever an opponent casts a spell, that player loses 5 life unless they discard a card.

When Phyrexian Devourer's power is 7 or greater, sacrifice it.

Exile the top card of your library: Put X +1/+1 counters on Phyrexian Devourer, where X is the exiled card's mana value.

Players have no maximum hand size.

At the beginning of each opponent's upkeep, Price of Knowledge deals damage to that player equal to the number of cards in that player's hand.

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

Kicker {7} (You may pay an additional {7} as you cast this spell.)

Search target player's library for up to three cards, exile them, then that player shuffles. If this spell was kicked, instead search that player's library for up to fifteen cards, exile them, then that player shuffles.

Target player draws two cards and loses 2 life.

Flying

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

{B}: Skithiryx, the Blight Dragon gains haste until end of turn.

{B}{B}: Regenerate Skithiryx.

If you control a Swamp, you may pay 4 life rather than pay this spell's mana cost.

Destroy target nonblack creature. It can't be regenerated.

{T}: Add {C}{C}.

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)

Target creature gets -4/-4 until end of turn.

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control.)

Equip {1}

Each other player sacrifices a creature. You create a 2/2 black Zombie creature token for each creature sacrificed this way.

Each other player discards a card. You draw a card for each card discarded this way.

Syphon Soul deals 2 damage to each other player. You gain life equal to the damage dealt this way.

If an opponent would gain life, that player loses that much life instead.

Flying

As Thief of Blood enters the battlefield, remove all counters from all permanents. Thief of Blood enters the battlefield with a +1/+1 counter on it for each counter removed this way.

{T}: Add {C}{C}{C}.

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.

Triskelion enters the battlefield with three +1/+1 counters on it.

Remove a +1/+1 counter from Triskelion: It deals 1 damage to any target.

Each land is a Swamp in addition to its other land types.

First strike

Sacrifice Vampire Hexmage: Remove all counters from target permanent.

Destroy target nonblack creature. It can't be regenerated. You lose life equal to that creature's toughness.

Destroy target non-Vampire, non-Werewolf, non-Zombie creature.