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You have no maximum hand size.

If an effect causes you to discard a card, discard it, but you may put it on top of your library instead of into your graveyard.

{green}G{green}G: Counter target black spell.

Target spell or permanent becomes green. (Mana symbols on that permanent remain unchanged.)

Whenever a Forest an opponent controls becomes tapped, you gain 1 life.

Lightning Bolt deals 3 damage to any target.

Enchant artifact

Whenever you're dealt damage, put that many vitality counters on this Aura.

At the beginning of your upkeep, you may remove a vitality counter from this Aura. If you do, you gain 1 life.

All Forests are 1/1 creatures that are still lands.

{tap}↷: Add {green}G.

Other Merfolk get +1/+1 and have islandwalk. (They can't be blocked as long as defending player controls an Island.)

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.

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)

Enchant creature

All creatures able to block enchanted creature do so.

Change the text of target spell or permanent by replacing all instances of one basic land type with another. (For example, you may change "swampwalk" to "plainswalk." This effect lasts indefinitely.)

Blue creatures don't untap during their controllers' untap steps.

At the beginning of each player's upkeep, that player may choose any number of tapped blue creatures they control and pay {4 generic}4 for each creature chosen this way. If the player does, untap those creatures.

Flying (This creature can't be blocked except by creatures with flying or reach.)

You and target opponent each flip a coin. Mana Clash deals 1 damage to each player whose coin comes up tails. Repeat this process until both players' coins come up heads on the same flip.

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

Tap all lands target player controls and that player loses all unspent mana.

Whenever a player taps a land for mana, this enchantment deals 1 damage to that player.

All creatures get -2/-0 until end of turn.

Whenever this creature deals damage to a player, that player gets two poison counters. (A player with ten or more poison counters loses the game.)

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

Flying; banding (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding you control are blocking or being blocked by a creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

{2 generic}2, {tap}↷: Target player mills two cards.

Each player may discard up to three cards. Mind Bomb deals damage to each player equal to 3 minus the number of cards they discarded this way.

{tap}↷: Add {colorless}C.

{1 generic}1: This land becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land.

{tap}↷: Target Assembly-Worker creature gets +1/+1 until end of turn.

Banding (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding you control are blocking or being blocked by a creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

At the beginning of your upkeep, this creature deals 3 damage to you unless you discard a card. If it deals damage to you this way, tap it.

Attacking creatures get +1/+1 until end of turn.

({T}: Add {R}.)

Whenever this creature attacks and isn't blocked, it gets +2/+0 until end of combat.

Whenever this creature deals damage to a player, that player loses 1 life at the beginning of their next draw step unless they pay {1 generic}1 before that draw step.

Haste

At the beginning of your upkeep, if this card is in your graveyard with three or more creature cards above it, you may put this card onto the battlefield.

This artifact enters tapped.

{1 generic}1, {tap}↷: Destroy all artifacts, creatures, and enchantments.

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.

{white}W{white}W, {tap}↷: Destroy target black permanent.

{tap}↷: Prevent the next 1 damage that would be dealt to target creature this turn.

When this creature dies, you gain 2 life.

{tap}↷: This creature deals 2 damage to any target and 3 damage to you.

Attacking creatures you control get +1/+0.

Flying

Flying

At the beginning of each end step, if a creature died this turn, put a carrion counter on this creature.

Remove two carrion counters from this creature: This creature gets +1/+1 until end of turn.

Enchant creature

When this Aura enters, tap enchanted creature.

Enchanted creature doesn't untap during its controller's untap step.

At the beginning of the upkeep of enchanted creature's controller, that player may pay {4 generic}4. If the player does, untap the creature.

{0 generic}0: The next 1 damage that would be dealt to this creature this turn is dealt to its owner instead. Only this creature's owner may activate this ability.

When this creature dies, its owner loses half their life, rounded up.

At the beginning of the end step, if no creatures are on the battlefield, sacrifice this enchantment.

{black}B: This enchantment deals 1 damage to each creature and each player.

Flying

At the beginning of your upkeep, sacrifice this creature unless you pay {blue}U.

Enchant land

As this Aura enters, choose a basic land type.

Enchanted land is the chosen type.

Flying

Blocking creatures get +0/+3 until end of turn.

First strike; banding (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding you control are blocking or being blocked by a creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

This creature can't attack unless defending player controls an Island.

{tap}↷: This creature deals 1 damage to any target.

When you control no Islands, sacrifice this creature.

Whenever this creature deals damage to a player, that player gets a poison counter. (A player with ten or more poison counters loses the game.)

Plague Rats's power and toughness are each equal to the number of creatures named Plague Rats on the battlefield.

({T}: Add {W}.)

Enchant enchantment

At the beginning of the upkeep of enchanted enchantment's controller, that player may pay any amount of mana. This Aura deals 2 damage to that player. Prevent X of that damage, where X is the amount of mana that player paid this way.

Counter target spell unless its controller pays {X}X. If that player doesn't, they tap all lands with mana abilities they control and lose all unspent mana.

At the beginning of each player's upkeep, this enchantment deals X damage to that player, where X is the number of untapped lands they controlled at the beginning of this turn.