{T}: Add one mana of any color in your commander's color identity.

At the beginning of each postcombat main phase, the active player adds {C}{C} for each of your opponents who lost life this turn. (Damage causes loss of life.)

When this creature enters, each player may discard a card. Each player who discarded a card this way may search their library for a basic land card, reveal it, put it into their hand, then shuffle.

Join forces — Starting with you, each player may pay any amount of mana. Each player searches their library for up to X basic land cards, where X is the total amount of mana paid this way, puts them onto the battlefield tapped, then shuffles.

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

You may play an additional land on each of your turns. Lands you control are every basic land type in addition to their other types.

At the beginning of each player's first main phase, that player adds {G}{G}.

Each player may play an additional land on each of their turns. At the beginning of each player's upkeep, if that player has no cards in hand, that player draws three cards.

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

Spells cost {1} less to cast.

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.) {T}: Add {B}, {R}, or {G}.

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

If this card is in your opening hand, you may begin the game with it on the battlefield. Whenever you tap a creature for mana, add an additional {G}. {6}{G}{G}: Put a +1/+1 counter on each creature you control.

Flying You don't lose unspent red mana as steps and phases end. When this creature dies, you may pay any amount of {R}. When you do, it deals that much damage to any target.

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

At the beginning of each player's first main phase, that player adds {G}{G}.

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

If you tap a permanent for mana, it produces twice as much of that mana instead.

You don't lose unspent green mana as steps and phases end. Omnath gets +1/+1 for each unspent green mana you have.

At the beginning of each player's draw step, that player draws an additional card. Each player may play an additional land on each of their turns.

When this creature enters, each opponent may search their library for up to three basic land cards. They each put one of those cards onto the battlefield tapped under your control and the rest onto the battlefield tapped under their control. Then each player who searched their library this way shuffles.

{T}: Add X mana of any one color, where X is the number of enchantments you control.

Untap all permanents you control during each other player's untap step.

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

Whenever a player casts a creature spell, that player adds {G}.

Tempting offer — Search your library for a land card and put it onto the battlefield. Each opponent may search their library for a land card and put it onto the battlefield. For each opponent who searches a library this way, search your library for a land card and put it onto the battlefield. Then each player who searched a library this way shuffles.

At the beginning of your upkeep, each opponent may create a Treasure token. For each opponent who does, you create a Treasure token.

When this creature dies, each player may search their library for up to two basic land cards, put them onto the battlefield, then shuffle.

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

First strike, haste Whenever a player taps a land for mana, if this creature is tapped, that player adds one mana of any type that land produced. Then that land deals 1 damage to that player.

At the beginning of each player's end step, this enchantment deals X damage to that player, where X is the number of untapped lands they control.

Flash If a source would deal damage to a permanent or player, it deals double that damage to that permanent or player instead.

Whenever an opponent activates an ability of an artifact, creature, or land on the battlefield, if it isn't a mana ability, this creature deals 2 damage to that player.

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

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.

At the beginning of each player's upkeep, this enchantment deals 1 damage to them. Whenever a player casts a spell, if no mana was spent to cast that spell, this enchantment deals 5 damage to that player. {R}: Your opponents can't gain life this turn.

Whenever a player casts a spell, if it's not their turn, this creature deals 4 damage to them.

At the beginning of each player's upkeep, this enchantment deals 2 damage to that player. If a player would gain life, that player gains no life instead.

({T}: Add {R} or {G}.) This land enters tapped unless you control two or more basic lands.

{T}: Add one mana of any color in your commander's color identity.

This land enters tapped unless you control two or more other lands. {T}: Add {B} or {G}.

This land enters tapped unless you control a Swamp or a Mountain. {T}: Add {B} or {R}.

{T}, Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

{T}: Add one mana of any color that a land an opponent controls could produce.

({T}: Add {G}.)

This land enters tapped. When this land enters, return a land you control to its owner's hand. {T}: Add {B}{G}.

This land enters tapped. When this land enters, return a land you control to its owner's hand. {T}: Add {R}{G}.

This land enters tapped unless you control two or more other lands. {T}: Add {B} or {R}.

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

{T}: Add {C}. {X}{R}{G}, {T}: Target creature gets +X/+0 and gains trample until end of turn.

({T}: Add {R}.)

This land enters tapped. When this land enters, return a land you control to its owner's hand. {T}: Add {B}{R}.

This land enters tapped unless you control two or more other lands. {T}: Add {R} or {G}.

This land enters tapped unless you control a Mountain or a Forest. {T}: Add {R} or {G}.

This land enters tapped. {T}: Add {B}, {R}, or {G}.

({T}: Add {B} or {R}.) This land enters tapped unless you control two or more basic lands.

({T}: Add {B}.)

{T}, Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

This land enters tapped unless you have two or more opponents. {T}: Add {B} or {G}.

This land enters tapped unless you control a Swamp or a Forest. {T}: Add {B} or {G}.

Whenever an opponent casts a noncreature spell, this enchantment deals 1 damage to that player. {1}, Sacrifice this enchantment: Destroy target artifact or enchantment. This enchantment deals 2 damage to that permanent's controller.

Whenever a player casts a noncreature spell, each of that player's opponents may draw a card.

At the beginning of your upkeep, each player draws a card. Whenever an opponent draws a card, that player loses 1 life.

At the beginning of each player's upkeep, that player loses 2 life and draws two cards.

At the beginning of each player's draw step, that player draws an additional card. Whenever a player draws a card, this enchantment deals 1 damage to that player.

Menace At the beginning of your upkeep, each player draws a card and loses 1 life.

{T}: Each player draws a card.

Creatures you control have hexproof. {1}{G}: Regenerate target creature. (The next time it would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)

Protection from green (This creature can't be blocked, targeted, dealt damage, enchanted, or equipped by anything green.) Creatures your opponents control can't have +1/+1 counters put on them.

Creature and enchantment spells you control can't be countered. {3}{G}: Target land you control becomes an X/X Elemental creature with trample and haste until end of turn, where X is the number of enchantments you control. It's still a land.

Prevent all combat damage that would be dealt this turn.

If you control a commander, you may cast this spell without paying its mana cost. Prevent all damage that would be dealt this turn by creatures your opponents control.

Creatures named Lightning Rager can't attack you or planeswalkers you control. At the beginning of each player's upkeep, that player creates a 5/1 red Elemental creature token named Lightning Rager. It has trample, haste, and "At the beginning of the end step, sacrifice this token."