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

Arixmethes, Slumbering Isle enters the battlefield tapped with five slumber counters on it.

As long as Arixmethes has a slumber counter on it, it's a land. (It's not a creature.)

Whenever you cast a spell, you may remove a slumber counter from Arixmethes.

{T}: Add {G}{U}.

You may play two additional lands on each of your turns.

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

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

Flying

{T}: Add one mana of any color.

{T}: Add {G}.

Channel -- {1}{G}, Discard Boseiju, Who Endures: Destroy target artifact, enchantment, or nonbasic land an opponent controls. That player may search their library for a land card with a basic land type, put it onto the battlefield, then shuffle. This ability costs {1} less to activate for each legendary creature you control.

Lands you control have "{T}: Add one mana of any color."

{T}: Add one mana of any color.

Whenever City of Brass becomes tapped, it deals 1 damage to you.

{T}: Add one mana of any color.

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

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.

{T}: Add {W}.

{W}, {T}: Prevent the next 2 damage that would be dealt to target legendary creature this turn.

{T}: Add {W}.

Channel -- {2}{W}, Discard Eiganjo, Seat of the Empire: It deals 4 damage to target attacking or blocking creature. This ability costs {1} less to activate for each legendary creature you control.

Vigilance

{T}: Add one mana of any color.

Other legendary creatures you control have vigilance and "{T}: Add one mana of any color."

At the beginning of your upkeep, reveal cards from the top of your library until you reveal a creature or planeswalker card. Put that card onto the battlefield and the rest on the bottom of your library in a random order.

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

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

{T}: Add {W}.

When Flagstones of Trokair is put into a graveyard from the battlefield, you may search your library for a Plains card, put it onto the battlefield tapped, then shuffle.

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

{T}: Add {R}.

{T}: Target creature loses all landwalk abilities until end of turn.

Each legendary creature you control gets +1/+1 for each other legendary creature you control.

{X}, {T}: Look at the top X cards of your library. You may reveal a legendary creature card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

Legendary creatures you control get +X/+X, where X is the number of legendary creatures you control.

Whenever you cast a legendary spell from your hand, exile cards from the top of your library until you exile a legendary nonland card with lesser mana value. You may cast that card without paying its mana cost. Put the rest on the bottom of your library in a random order.

Choose one. If you control a commander as you cast this spell, you may choose both.

• Until end of turn, any number of target lands you control become 1/1 Elemental creatures with vigilance, indestructible, and haste. They're still lands.

• Choose target creature you don't control. Each creature you control deals damage equal to its power to that creature.

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

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

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

{T}, Pay 1 life: Add one mana of any color.

At the beginning of your upkeep, flip a coin. If you lose the flip, Mana Crypt deals 3 damage to you.

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

Add two mana in any combination of colors.

Draw a card.

{T}: Add {U}.

{U}, {T}: Untap target legendary permanent.

All lands become 2/2 creatures until end of turn. They're still lands.

Search your library for a Forest card, put that card onto the battlefield, then shuffle.

All lands are 2/2 creatures that are still lands.

Whenever you cast an instant or sorcery spell, you may put three +1/+1 counters on target land you control. If you do, that land becomes a 0/0 Elemental creature with haste that's still a land.

{T}: Add {U}.

{1}: Return Oboro, Palace in the Clouds to its owner's hand.

At the beginning of combat on your turn, up to one target land you control becomes an X/X Elemental creature with trample and haste until end of turn, where X is Obuun's power. It's still a land.

Landfall -- Whenever a land enters the battlefield under your control, put a +1/+1 counter on target creature.

{T}: Add {G}.

{G}, {T}: Target legendary creature gets +1/+1 until end of turn.

You may play an additional land on each of your turns.

Play with the top card of your library revealed.

You may play lands from the top of your library.

{T}: Add {U}.

Channel -- {3}{U}, Discard Otawara, Soaring City: Return target artifact, creature, enchantment, or planeswalker to its owner's hand. This ability costs {1} less to activate for each legendary creature you control.

{T}: Add {G}.

{T}: Target 1/1 creature gets +1/+2 until end of turn.

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

{T}: Add {C}.

{T}: Add one mana of any color. Spend this mana only to cast a legendary spell.

{T}: Add one mana of any color among legendary permanents you control.

{3}, {T}, Exile Plaza of Heroes: Target legendary creature gains hexproof and indestructible until end of turn.

Lands you control are every basic land type in addition to their other types.

{T}: Add one mana of any type that a land you control could produce.

{T}: Add one mana of any color.

Tap an untapped legendary creature you control: Add one mana of any color.

Whenever an opponent casts a spell, you may draw a card unless that player pays {1}.

You may have Sakashima of a Thousand Faces enter the battlefield as a copy of another creature you control, except it has Sakashima of a Thousand Faces's other abilities.

The "legend rule" doesn't apply to permanents you control.

Partner (You can have two commanders if both have partner.)

You may have Sakashima the Impostor enter the battlefield as a copy of any creature on the battlefield, except its name is Sakashima the Impostor, it's legendary in addition to its other types, and it has "{2}{U}{U}: Return this creature to its owner's hand at the beginning of the next end step."

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

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

{T}: Add {W} for each enchantment you control.

Menace

Other legendary creatures you control have menace.

Whenever you play a legendary land or cast a legendary spell, you draw a card and you lose 1 life.

{T}: Add {R}.

{R}, {T}: Target legendary creature gains first strike until end of turn.

{T}: Add {B}.

{B}, {T}: Target legendary creature gains fear until end of turn. (It can't be blocked except by artifact creatures and/or black creatures.)

Whenever an opponent draws a card, that player may pay {2}. If the player doesn't, you create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

{T}: Add {R}.

Channel -- {3}{R}, Discard Sokenzan, Crucible of Defiance: Create two 1/1 colorless Spirit creature tokens. They gain haste until end of turn. This ability costs {1} less to activate for each legendary creature you control.

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

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

{T}: Add {B}.

Channel -- {3}{B}, Discard Takenuma, Abandoned Mire: Mill three cards, then return a creature or planeswalker card from your graveyard to your hand. This ability costs {1} less to activate for each legendary creature you control.

Land creatures you control have flying.

Whenever a land enters the battlefield under your control, if you control seven or more lands, up to one target land you control becomes a 3/3 Elemental creature with haste. It's still a land.

All lands have indestructible.

Search your library for a Forest card, put it onto the battlefield, then shuffle.

Search your library for a Plains card. If target opponent controls more lands than you, you may search your library for an additional Plains card. Reveal those cards, put them into your hand, then shuffle.

{T}: Add {U}.

{T}: Target creature loses banding and all "bands with other" abilities until end of turn. Activate only during any upkeep step.

Flying

Lands on the battlefield and land cards in graveyards can't be the targets of spells or abilities your opponents control.

Your opponents can't play land cards from graveyards.

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

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

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

{T}: Add {B}.

{T}: Target creature loses first strike or swampwalk until end of turn.

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

When Uro enters the battlefield, sacrifice it unless it escaped.

Whenever Uro enters the battlefield or attacks, you gain 3 life and draw a card, then you may put a land card from your hand onto the battlefield.

Escape--{G}{G}{U}{U}, Exile five other cards from your graveyard. (You may cast this card from your graveyard for its escape cost.)

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

{W}, {T}: Search your library for a land card, reveal it, put it into your hand, then shuffle. Activate only if an opponent controls more lands than you.

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