{1}, {T}: Add {W}{U}.

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

{T}: Add one mana of any color in your commander's color identity. Sacrifice Commander's Sphere: Draw a card.

{1}, {T}: Add {U}{B}.

As Herald's Horn enters the battlefield, choose a creature type. Creature spells you cast of the chosen type cost {1} less to cast. At the beginning of your upkeep, look at the top card of your library. If it's a creature card of the chosen type, you may reveal it and put it into your hand.

Equipped creature gets +3/+0 and has trample and lifelink. Equip {3}

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) As Obelisk of Urd enters the battlefield, choose a creature type. Creatures you control of the chosen type get +2/+2.

{1}, {T}: Add {W}{B}.

Equipped creature gets +2/+0, has vigilance, and is a Knight in addition to its other types. Whenever equipped creature attacks, create a 2/2 white Knight creature token with vigilance that's attacking. Equip {3}

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

Vigilance Azorius Knight-Arbiter can't be blocked.

Menace (This creature can't be blocked except by two or more creatures.) Whenever Belle of the Brawl attacks, other Knights you control get +1/+0 until end of turn.

Other creatures you control get +1/+1.

Flash When Blacklance Paragon enters the battlefield, target Knight gains deathtouch and lifelink until end of turn.

Changeling (This card is every creature type.) As Bloodline Pretender enters the battlefield, choose a creature type. Whenever another creature of the chosen type enters the battlefield under your control, put a +1/+1 counter on Bloodline Pretender.

Flying, lifelink Whenever Breathless Knight or another creature enters the battlefield under your control, if that creature entered from a graveyard or you cast it from a graveyard, put a +1/+1 counter on Breathless Knight.

Whenever another creature enters the battlefield under your control, each opponent loses 1 life.

Protection from black Crusading Knight gets +1/+1 for each Swamp your opponents control.

Menace, lifelink Whenever a Knight you control deals combat damage to a player, put a +1/+1 counter on that creature and create a Blood token. (It's an artifact with "{1}, {T}, Discard a card, Sacrifice this artifact: Draw a card.")

First strike (This creature deals combat damage before creatures without first strike.) Lifelink (Damage dealt by this creature also causes you to gain that much life.) Fiendslayer Paladin can't be the target of black or red spells your opponents control.

Vigilance (Attacking doesn't cause this creature to tap.) When Gallant Cavalry enters the battlefield, create a 2/2 white Knight creature token with vigilance.

You may cast Haakon, Stromgald Scourge from your graveyard, but not from anywhere else. As long as Haakon is on the battlefield, you may cast Knight spells from your graveyard. When Haakon dies, you lose 2 life.

Horsemanship (This creature can't be blocked except by creatures with horsemanship.) Other Knights you control have horsemanship.

Kicker {5}{B} (You may pay an additional {5}{B} as you cast this spell.) Menace When Josu Vess, Lich Knight enters the battlefield, if it was kicked, create eight 2/2 black Zombie Knight creature tokens with menace.

First strike (This creature deals combat damage before creatures without first strike.) Other Knight creatures you control get +1/+1 and have indestructible. (Damage and effects that say "destroy" don't destroy them.)

First strike {W}{W}: Knight of Dawn gains protection from the color of your choice until end of turn.

Menace (This creature can't be blocked except by two or more creatures.) Your opponents can't gain life. {1}{B}: Knight of Dusk's Shadow gets +1/+1 until end of turn.

First strike Hexproof from black (This creature can't be the target of black spells or abilities your opponents control.) Knight of Grace gets +1/+0 as long as any player controls a black permanent.

First strike Hexproof from white (This creature can't be the target of white spells or abilities your opponents control.) Knight of Malice gets +1/+0 as long as any player controls a white permanent.

{2}{B}: Knight of the Ebon Legion gets +3/+3 and gains deathtouch until end of turn. At the beginning of your end step, if a player lost 4 or more life this turn, put a +1/+1 counter on Knight of the Ebon Legion. (Damage causes loss of life.)

Flanking (Whenever a creature without flanking blocks this creature, the blocking creature gets -1/-1 until end of turn.) If Knight of the Holy Nimbus would be destroyed, regenerate it. (Tap it, remove it from combat, and heal all damage on it.) {2}: Knight of the Holy Nimbus can't be regenerated this turn. Only your opponents may activate this ability.

Vigilance When Knight of the New Coalition enters the battlefield, create a 2/2 white and blue Knight creature token with vigilance.

Menace Whenever a nontoken Knight you control dies, each opponent loses 1 life and you draw a card.

Flying When Lyev Skyknight enters the battlefield, detain target nonland permanent an opponent controls. (Until your next turn, that permanent can't attack or block and its activated abilities can't be activated.)

Other Knights you control get +1/+1. {W}{U}, {T}: Tap another target creature.

Whenever a nontoken creature you control dies, Midnight Reaper deals 1 damage to you and you draw a card.

Whenever a player draws their second card during their turn, you draw a card. Whenever a player casts their second spell during their turn, you create a 2/2 white Knight creature token.

Other Knights you control get +1/+1. {3}{W}{W}: Knights you control gain double strike until end of turn.

Whenever you draw a card, put a +1/+1 counter on each other Merfolk and/or Knight you control.

As Etchings of the Chosen enters the battlefield, choose a creature type. Creatures you control of the chosen type get +1/+1. {1}, Sacrifice a creature of the chosen type: Target creature you control gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.)

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I, II — Create a 2/2 white Knight creature token with vigilance. III — Knights you control get +2/+1 until end of turn.

As Kindred Discovery enters the battlefield, choose a creature type. Whenever a creature you control of the chosen type enters the battlefield or attacks, draw a card.

Enchant creature When Knightly Valor enters the battlefield, create a 2/2 white Knight creature token with vigilance. (Attacking doesn't cause it to tap.) Enchanted creature gets +2/+2 and has vigilance.

Whenever a Knight you control attacks, each opponent loses 1 life and you gain 1 life. {6}{W}{B}, Sacrifice Knights' Charge: Return all Knight creature cards from your graveyard to the battlefield.

As Rally the Ranks enters the battlefield, choose a creature type. Creatures you control of the chosen type get +1/+1.

Choose one — • Creatures you control gain lifelink until end of turn. • Draw a card. • Put target attacking or blocking creature on top of its owner's library.

Exile target creature. Its controller may search their library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Choose one — • Return target creature card from your graveyard to your hand. • Return two target creature cards that share a creature type from your graveyard to your hand.

Arcane Sanctum enters the battlefield tapped. {T}: Add {W}, {U}, or {B}.

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

Concealed Courtyard enters the battlefield tapped unless you control two or fewer other lands. {T}: Add {W} or {B}.

Darkslick Shores enters the battlefield tapped unless you control two or fewer other lands. {T}: Add {U} or {B}.

{T}: Add {C}. {1}, {T}, Sacrifice Esper Panorama: Search your library for a basic Plains, Island, or Swamp 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 {U}.)

When Obscura Storefront enters the battlefield, sacrifice it. When you do, search your library for a basic Plains, Island, or Swamp card, put it onto the battlefield tapped, then shuffle and you gain 1 life.

({T}: Add {W}.)

{T}: Add {C}. {4}, {T}: Target creature can't be blocked this turn.

Seachrome Coast enters the battlefield tapped unless you control two or fewer other lands. {T}: Add {W} or {U}.

Will of the council — Starting with you, each player votes for sickness or psychosis. If sickness gets more votes, creatures your opponents control get -2/-2 until end of turn. If psychosis gets more votes or the vote is tied, each opponent discards two cards.

Choose a creature type. Creatures that aren't of the chosen type get -3/-3 until end of turn.

Choose a creature type. Target player draws X cards and loses X life, where X is the number of creatures they control of the chosen type.