First strike

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.) At the beginning of your upkeep, this creature deals 8 damage to you unless you pay {G}{G}{G}{G}.

Flying {R}: This creature gets +0/+1 until end of turn.

At the beginning of your upkeep, this creature deals 1 damage to you.

This creature gets +1/+1 as long as you control a Swamp. {B}: Regenerate this creature.

Destroy all lands.

Counter target spell.

At the beginning of your upkeep, destroy the creature with the least power. It can't be regenerated. If two or more creatures are tied for least power, you choose one of them. When there are no creatures on the battlefield, sacrifice this enchantment.

Earthquake deals X damage to each creature without flying and each player.

Lightning Bolt deals 3 damage to any target.

Flying, trample At the beginning of your upkeep, sacrifice a creature other than this creature. If you can't, this creature deals 7 damage to you.

This artifact enters tapped. {1}, {T}: Destroy all artifacts, creatures, and enchantments.

{W}{W}, {T}: Destroy target black permanent.

{T}: Destroy target tapped creature.

Exile target creature. Its controller gains life equal to its power.

If a player would draw a card except the first one they draw in each of their draw steps, that player discards a card instead. If the player discards a card this way, they draw a card. If the player doesn't discard a card this way, they mill a card.

{3}, {T}: Target player discards a card. Activate only during your turn.

Flying Whenever this creature deals damage to an opponent, that player discards a card at random.

({T}: Add {B} or {R}.)

({T}: Add {B} or {G}.)

{T}: Draw two cards, then discard three cards.

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

{T}, Sacrifice a creature: You gain life equal to the sacrificed creature's toughness.

{T}: Add {G} for each creature you control.

({T}: Add {U}.)

{T}: Add {C}{C}{C}. Spend this mana only to cast artifact spells.

{T}: Add {C}. {1}: This land becomes a 2/2 creature with all creature types until end of turn. It's still a land.

({T}: Add {R} or {W}.)

{T}, Pay 1 life, Sacrifice this land: Search your library for an Island or Swamp card, put it onto the battlefield, then shuffle.

({T}: Add {G} or {W}.)

({T}: Add {W} or {B}.)

({T}: Add {R} or {G}.)

All creatures have "At the beginning of your upkeep, destroy this creature unless you pay {1}."

({T}: Add {G} or {U}.)

({T}: Add {W} or {U}.)

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

({T}: Add {U} or {B}.)

({T}: Add {U} or {R}.)

All Swamps are 1/1 black creatures that are still lands.

Creatures with power 3 or greater don't untap during their controllers' untap steps.

Whenever a player casts a spell, counter it unless that player pays {3}.

Players skip their untap steps. At the beginning of your upkeep, sacrifice this enchantment unless you pay {U}.

At the beginning of each player's upkeep, destroy target nonartifact creature that player controls of their choice. It can't be regenerated.

Target player draws X cards.

At the beginning of each player's draw step, if this artifact is untapped, that player draws an additional card.

{4}, {T}: Draw a card.

Whenever a creature you control dies, draw a card. +1: Create a 2/2 black Zombie creature token. −4: Each player sacrifices two creatures of their choice. −9: Each opponent chooses a permanent they control of each permanent type and sacrifices the rest.

{T}, Sacrifice this artifact: Each player exiles all cards from their hand face down and draws seven cards. At the beginning of the next end step, each player discards their hand and returns to their hand each card they exiled this way.

Each player shuffles their hand and graveyard into their library, then draws seven cards. (Then put Timetwister into its owner's graveyard.)

First strike (This creature deals combat damage before creatures without first strike.) Protection from white (This creature can't be blocked, targeted, dealt damage, or enchanted by anything white.)

Creatures with power greater than the number of cards in your hand can't attack.

{1}: The next time an unblocked creature of your choice would deal combat damage to you this turn, prevent all but 1 of that damage.

As long as this creature is untapped, noncreature artifacts you control can't be enchanted, they have indestructible, and other players can't gain control of them. This effect doesn't remove Auras already attached to those artifacts.

As this enchantment enters, you lose life equal to your life total. You don't lose the game for having 0 or less life. If you would gain life, draw that many cards instead. Whenever you're dealt damage, sacrifice that many nontoken permanents. If you can't, you lose the game. When this enchantment is put into a graveyard from the battlefield, you lose the game.

Creatures without flying can't attack.

Whenever a land enters, this artifact deals 2 damage to that land's controller.

Whenever a land is put into a graveyard from the battlefield, this artifact deals 2 damage to that land's controller.

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

{X}, {T}: Untap X target lands.

You may have this enchantment enter as a copy of any artifact on the battlefield, except it's an enchantment in addition to its other types.

Add {B}{B}{B}.

Starting with you, each player may put a permanent card from their hand onto the battlefield. Repeat this process until no one puts a card onto the battlefield.

Red creatures get +1/+1. Whenever a Mountain is tapped for mana, its controller adds an additional {R}.

This artifact doesn't untap during your untap step. {T}: Add {C}{C}{C}. {4}: Untap this artifact.

{T}, Sacrifice this artifact: Add three mana of any one color. Spend this mana only to cast your commander.

+1: Search your library for a Swamp card, reveal it, put it into your hand, then shuffle. −3: Target creature gets +X/+X or -X/-X until end of turn, where X is the number of Swamps you control. −6: You get an emblem with "Swamps you control have '{T}: Add {B}{B}{B}{B}.'"

Discard your hand, Sacrifice this artifact: Add three mana of any one color. Activate only as an instant.

At the beginning of your upkeep, flip a coin. If you lose the flip, this artifact deals 3 damage to you. {T}: Add {C}{C}.

Whenever a player taps a land for mana, that player adds one mana of any type that land produced.

{T}: Reveal any number of artifact cards in your hand. Add {C}{C} for each card revealed this way.

If this artifact would enter, you may discard a land card instead. If you do, put this artifact onto the battlefield. If you don't, put it into its owner's graveyard. {T}: Add one mana of any color.

Flying When this creature enters, untap up to seven lands. {2}{U}{U}: Return this creature to its owner's hand.

When this creature dies, you may exile it. If you do, search your library for an enchantment card, put that card onto the battlefield, then shuffle.

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

Search your library for a card, then shuffle and put that card on top. You lose 2 life.

Search your library for three cards and reveal them. Target opponent chooses one. Put that card into your hand and the rest into your graveyard. Then shuffle.

Flying (This creature can't be blocked except by creatures with flying or reach.) Nightmare's power and toughness are each equal to the number of Swamps you control.

Flying {R}: This creature gets +1/+0 until end of turn.

Exile All Hallow's Eve with two scream counters on it. At the beginning of your upkeep, if this card is exiled with a scream counter on it, remove a scream counter from it. If there are no more scream counters on it, put it into your graveyard and each player returns all creature cards from their graveyard to the battlefield.

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.