Vigilance

Adeline, Resplendent Cathar's power is equal to the number of creatures you control.

Whenever you attack, for each opponent, create a 1/1 white Human creature token that's tapped and attacking that player or a planeswalker they control.

Vigilance

Whenever Agrus Kos, Eternal Soldier becomes the target of an ability that targets only it, you may pay {1}{R/W}. If you do, copy that ability for each other creature you control that ability could target. Each copy targets a different one of those creatures. ({R/W} can be paid with either {R} or {W}.)

Flying, first strike, vigilance, trample, haste, protection from black and from red

Flying, first strike, vigilance, trample

At the beginning of each combat, until end of turn, each other creature you control gets +1/+1 if it has flying, +1/+1 if it has first strike, and so on for double strike, deathtouch, haste, hexproof, indestructible, lifelink, menace, protection, reach, trample, vigilance, and partner.

Partner

Exile target nonland permanent. You lose 3 life.

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

Deathtouch, lifelink

Other legendary creatures you control get +2/+2.

Flying, vigilance, haste

Whenever Aurelia, the Warleader attacks for the first time each turn, untap all creatures you control. After this phase, there is an additional combat phase.

Vigilance

Creatures can't attack you or planeswalkers you control unless their controller pays {1} for each of those creatures.

{T}: Add {C}.

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

Barad-dûr enters the battlefield tapped unless you control a legendary creature.

{T}: Add {B}.

{X}{X}{B}, {T}: Amass Orcs X. Activate only if a creature died this turn.

When Brass's Tunnel-Grinder enters the battlefield, discard any number of cards, then draw that many cards plus one.

At the beginning of your end step, if you descended this turn, put a bore counter on Brass's Tunnel-Grinder. Then if there are three or more bore counters on it, remove those counters and transform it. (You descended if a permanent card was put into your graveyard from anywhere.)

(Transforms from Brass's Tunnel-Grinder.)

{T}: Add {R}.

Whenever you cast a permanent spell using mana produced by Tecutlan, the Searing Rift, discover X, where X is that spell's mana value.

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

Whenever another nontoken legendary permanent enters the battlefield under your control, you may pay {1}. If you do, create a token that's a copy of it. That token gains haste. Sacrifice it at the beginning of the next end step.

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

Whenever you're dealt damage, you may create that many 1/1 white Soldier creature tokens.

Legendary creatures you control get +2/+2.

You have no maximum hand size.

{T}: Add one mana of any color.

+2: Up to one target legendary creature gains vigilance, lifelink, and indestructible until your next turn.

-3: Reveal the top four cards of your library. Put any number of legendary cards from among them into your hand and the rest into your graveyard. Create a Treasure token for each card put into your graveyard this way.

-11: Gain control of all nonland permanents until end of turn. Untap them. They gain haste until end of turn.

Dihada, Binder of Wills can be your commander.

{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.

Deathtouch

Whenever another creature enters the battlefield under your control, you gain 1 life.

Whenever another creature you control dies, each opponent loses 1 life.

Vigilance

Other creatures you control get +2/+2.

Creatures your opponents control get -2/-2.

Whenever Etali, Primal Storm attacks, exile the top card of each player's library, then you may cast any number of spells from among those cards without paying their mana costs.

{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.

Legendary creatures you control get +2/+1 and have ward {1}.

Nonlegendary creatures you control get +1/+1.

When Gallifrey Council Chamber enters the battlefield, surveil 1. (Look at the top card of your library. You may put that card into your graveyard.)

{T}: Add {C}.

{T}: Add one mana of any color. Spend this mana only to cast a Time Lord or Alien spell or activate an ability of a Time Lord or Alien.

{T}: Add {C}.

{2}, {T}: Each player draws a card, then discards a card.

Destroy target permanent. Its controller creates a 3/3 green Elephant creature token.

Double strike

Whenever another legendary creature enters the battlefield under your control, put a +1/+1 counter on Gimli of the Glittering Caves.

Whenever Gimli deals combat damage to a player, create a Treasure token.

{T}: Add {C}.

When Gods' Eye, Gate to the Reikai is put into a graveyard from the battlefield, create a 1/1 colorless Spirit creature token.

{T}: Add {C}.

{1}, {T}: Add two mana in any combination of colors. Spend this mana only to cast legendary spells.

{T}: Add {C}.

{1}{W}, {T}: Put target enchantment card from your graveyard on top of your library.

{T}: Add {C}.

{4}, {T}: Investigate. (Create a colorless Clue artifact token with "{2}, Sacrifice this artifact: Draw a card.")

At the beginning of your end step, if you sacrificed three or more Clues this turn, transform Havengul Laboratory.

When this land transforms into Havengul Mystery, return target creature card from your graveyard to the battlefield.

When the creature put onto the battlefield with Havengul Mystery leaves the battlefield, transform Havengul Mystery.

{T}, Pay 1 life: Add {B}.

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.

{T}: Add {C}.

Tap an untapped legendary permanent you control: Untap Honor-Worn Shaku.

Whenever you attack, you may discard a card. When you do, put a +1/+1 counter on target attacking creature. It gains trample until end of turn.

Whenever you discard one or more cards, exile the top card of your library. You may play that card until your next end step.

{T}: Add {C}.

{4}{R}, {T}, Sacrifice a creature: Keldon Necropolis deals 2 damage to any target.

{T}: Add {C}.

{1}{R}, {T}: Create a 0/1 red Kobold creature token named Kobolds of Kher Keep.

Flying, lifelink

Whenever another nontoken creature you control dies, return that card to its owner's hand at the beginning of the next end step.

If a creature an opponent controls would die, exile it instead.

Vigilance

When Loran of the Third Path enters the battlefield, destroy up to one target artifact or enchantment.

{T}: You and target opponent each draw a card.

Whenever a player casts their second spell each turn, you lose 1 life and create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

Luxury Suite enters the battlefield tapped unless you have two or more opponents.

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

{T}: Add {C}.

{2}, {T}: Each player draws a card.

Minas Morgul, Dark Fortress enters the battlefield tapped.

{T}: Add {B}.

{3}{B}, {T}: Put a shadow counter on target creature. For as long as that creature has a shadow counter on it, it's a Wraith in addition to its other types. (A creature with shadow can block or be blocked by only creatures with shadow.)

Minas Tirith enters the battlefield tapped unless you control a legendary creature.

{T}: Add {W}.

{1}{W}, {T}: Draw a card. Activate only if you attacked with two or more creatures this turn.

Mines of Moria enters the battlefield tapped unless you control a legendary creature.

{T}: Add {R}.

{3}{R}, {T}, Exile three cards from your graveyard: Create two Treasure tokens.

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

Each legendary creature you control gets +1/+1.

Each nontoken creature you control gets +1/+1 for each other creature you control with the same name as that creature.

The "legend rule" doesn't apply.

{T}: Add {C}.

{4}: Mobilized District becomes a 3/3 Citizen creature with vigilance until end of turn. It's still a land. This ability costs {1} less to activate for each legendary creature and planeswalker you control.

Nomad Outpost enters the battlefield tapped.

{T}: Add {R}, {W}, or {B}.

At the beginning of each combat, creatures you control gain first strike until end of turn if a creature you control has first strike. The same is true for flying, deathtouch, double strike, haste, hexproof, indestructible, lifelink, menace, reach, skulk, trample, and vigilance.

{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.

(You may cast a legendary sorcery only if you control a legendary creature or planeswalker.)

Return all legendary permanent cards from your graveyard to the battlefield.

Deathtouch, haste

When Queen Marchesa enters the battlefield, you become the monarch.

At the beginning of your upkeep, if an opponent is the monarch, create a 1/1 black Assassin creature token with deathtouch and haste.

Vigilance, ward {2}

Other Zombies you control have vigilance.

Whenever another legendary creature you control dies, create a token that's a copy of that creature, except it's not legendary and it's a 2/2 black Zombie in addition to its other colors and types.

{T}: Add {C}.

{4}, {T}, Sacrifice a land: Rath's Edge deals 1 damage to any target.

{T}: Add one mana of any color.

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

Creatures you control have haste.

Legendary creatures you control get +1/+0.

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

Savai Triome enters the battlefield tapped.

Cycling {3} ({3}, Discard this card: Draw a card.)

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 {C}.

{2}{R}, {T}: Shivan Gorge deals 1 damage to each opponent.

{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.)

{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}.

Spectator Seating enters the battlefield tapped unless you have two or more opponents.

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

Equipped creature gets +1/+1.

Whenever equipped creature attacks, you may search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Equip {2}

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

{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.

First strike

Creatures and nonbasic lands your opponents control enter the battlefield tapped.

As The Black Gate enters the battlefield, you may pay 3 life. If you don't, it enters the battlefield tapped.

{T}: Add {B}.

{1}{B}, {T}: Choose a player with the most life or tied for most life. Target creature can't be blocked by creatures that player controls this turn.

When The Grey Havens enters the battlefield, scry 1.

{T}: Add {C}.

{T}: Add one mana of any color among legendary creature cards in your graveyard.

Myriad

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

Triggered abilities you control can't cause you to sacrifice or exile creature tokens you control.

Creatures you control have haste.

Creatures your opponents control enter the battlefield tapped.

(You may cast a legendary sorcery only if you control a legendary creature or planeswalker.)

Exile all nonland permanents that aren't legendary.

Vault of Champions enters the battlefield tapped unless you have two or more opponents.

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

Whenever another legendary permanent enters the battlefield under your control, put a +1/+1 counter on Yoshimaru, Ever Faithful.

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

This spell costs {1} less to cast for each creature in your party.

Flying, deathtouch, haste

Other creatures you control have deathtouch.

Whenever a creature you control deals combat damage to a planeswalker, destroy that planeswalker.

Haste

When Éowyn, Fearless Knight enters the battlefield, exile target creature an opponent controls with greater power. Legendary creatures you control gain protection from each of that creature's colors until end of turn.