Return all attacking creatures to their owner's hand.

Draw a card for each Bird on the battlefield.

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

Flying

Arctic Aven gets +1/+1 as long as you control a Plains.

{W}: Arctic Aven gains lifelink until end of turn. (Damage dealt by this creature also causes you to gain that much life.)

{T}: Add {C}.

Basic landcycling {1} ({1}, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.)

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

When Aven Cloudchaser enters the battlefield, destroy target enchantment.

Flying

When Aven Gagglemaster enters the battlefield, you gain 2 life for each creature you control with flying.

Flash

Flying

If an opponent would search a library, that player searches the top four cards of that library instead.

Flying

When Aven Surveyor enters the battlefield, choose one --

• Put a +1/+1 counter on Aven Surveyor.

• Return target creature to its owner's hand.

Azorius Chancery enters the battlefield tapped.

When Azorius Chancery enters the battlefield, return a land you control to its owner's hand.

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

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.

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

{W}{U}: Azorius Keyrune becomes a 2/2 white and blue Bird artifact creature with flying until end of turn.

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

{T}: Add {C}.

{1}, {T}, Sacrifice Bant Panorama: Search your library for a basic Forest, Plains, or Island card, put it onto the battlefield tapped, then shuffle.

Create two 1/1 white Bird creature tokens with flying.

Flashback--Tap three untapped white creatures you control. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Flying, first strike

{T}: Add {C}.

{5}{U}, {T}, Sacrifice Blighted Cataract: Draw two cards.

{T}: Add {C}.

{3}{W}, {T}, Sacrifice Blighted Steppe: You gain 2 life for each creature you control.

As Brass Herald enters the battlefield, choose a creature type.

When Brass Herald enters the battlefield, reveal the top four cards of your library. Put all creature cards of the chosen type revealed this way into your hand and the rest on the bottom of your library in any order.

Creatures of the chosen type get +1/+1.

Creatures you control have vigilance.

Each creature you control can block an additional creature each combat.

Flying

When Cloudchaser Eagle enters the battlefield, destroy target enchantment.

Flying

When Cloudchaser Kestrel enters the battlefield, destroy target enchantment.

{W}: Target permanent becomes white until end of turn.

Flying

Evolve (Whenever a creature enters the battlefield under your control, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)

Flying

At the beginning of combat on your turn, target creature you control gets +1/+0 and gains vigilance until end of turn.

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

Counter target spell.

Defender

{T}: Creatures you control gain haste until end of turn.

Tap all creatures without flying.

{T}, Sacrifice a creature: You gain life equal to the sacrificed creature's toughness.

Choose a creature type. Draw a card for each permanent you control of that type.

Flying

Other creatures you control with flying get +1/+1.

Flying

Spells your opponents cast that target one or more commanders you control cost {3} more to cast.

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

{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.

Multikicker {2} (You may pay an additional {2} any number of times as you cast this spell.)

Everflowing Chalice enters the battlefield with a charge counter on it for each time it was kicked.

{T}: Add {C} for each charge counter on Everflowing Chalice.

Faerie Conclave enters the battlefield tapped.

{T}: Add {U}.

{1}{U}: Faerie Conclave becomes a 2/1 blue Faerie creature with flying until end of turn. It's still a land.

Enchant permanent

When Faith's Fetters enters the battlefield, you gain 4 life.

Enchanted permanent can't attack or block, and its activated abilities can't be activated unless they're mana abilities.

Creatures you control with flying get +1/+1.

{T}: Add {C}.

{T}: Choose target commander that entered the battlefield this turn. Put a +1/+1 counter on it if it's a creature and a loyalty counter on it if it's a planeswalker.

{T}: Add {C}.

{5}, {T}, Sacrifice Foundry of the Consuls: Create two 1/1 colorless Thopter artifact creature tokens with flying.

Enchant creature

Enchanted creature loses all abilities and is a blue Frog creature with base power and toughness 1/1. (It loses all other card types and creature types.)

Flying

When Frost Trickster enters the battlefield, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step.

{T}: Add {C}.

{3}, {T}, Sacrifice Haunted Fengraf: Return a creature card at random from your graveyard to your hand.

Flying, lifelink

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.

As Heraldic Banner enters the battlefield, choose a color.

Creatures you control of the chosen color get +1/+0.

{T}: Add one mana of the chosen color.

Counter target spell that targets you or a permanent you control.

Draw a card.

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

Flying

Sacrifice Judge's Familiar: Counter target instant or sorcery spell unless its controller pays {1}.

Flying

Whenever Kangee's Lieutenant attacks, attacking creatures with flying get +1/+1 until end of turn.

Encore {5}{W} ({5}{W}, Exile this card from your graveyard: For each opponent, create a token copy that attacks that opponent this turn if able. They gain haste. Sacrifice them at the beginning of the next end step. Activate only as a sorcery.)

Flying, vigilance

Whenever Kangee, Sky Warden attacks, attacking creatures with flying get +2/+0 until end of turn.

Whenever Kangee blocks, blocking creatures with flying get +0/+2 until end of turn.

Counter target spell that targets a permanent you control.

Draw a card.

Draw a card for each attacking creature.

Flash

Enchant creature

Enchanted creature can't attack or block, and its activated abilities can't be activated.

Equipped creature has haste and shroud. (It can't be the target of spells or abilities.)

Equip {0}

Counter target spell unless its controller pays {1}. If you control a creature with flying, counter that spell unless its controller pays {4} instead.

Creatures you control get +1/+0 and gain indestructible until end of turn. (Damage and effects that say "destroy" don't destroy them.)

Creatures you control get +2/+2 until end of turn.

Makindi Mesas enters the battlefield tapped.

{T}: Add {W}.

Create four 1/1 white Bird creature tokens with flying.

Basic landcycling {2} ({2}, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.)

Whenever you attack with two or more creatures, draw a card.

As Mirror of the Forebears enters the battlefield, choose a creature type.

{1}: Until end of turn, Mirror of the Forebears becomes a copy of target creature you control of the chosen type, except it's an artifact in addition to its other types.

Flying

When Mist Raven enters the battlefield, return target creature to its owner's hand.

Myriad Landscape enters the battlefield tapped.

{T}: Add {C}.

{2}, {T}, Sacrifice Myriad Landscape: Search your library for up to two basic land cards that share a land type, put them onto the battlefield tapped, then shuffle.

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

{4}{W}{U}: Ojutai Monument becomes a 4/4 white and blue Dragon artifact creature with flying until end of turn.

Path of Ancestry enters the battlefield tapped.

{T}: Add one mana of any color in your commander's color identity. When that mana is spent to cast a creature spell that shares a creature type with your commander, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

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

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

Untap all creatures you control. Creatures you control with flying get +2/+2 until end of turn.

Whenever a creature you control deals combat damage to a player, you may draw a card.

Cycling {2} ({2}, Discard this card: Draw a card.)

You have no maximum hand size.

{T}: Add {C}.

{U}: Tap target creature unless its controller pays {1}.

Exile target creature card from your graveyard. Create X 1/1 white Bird creature tokens with flying, where X is the exiled card's toughness.

Target creature you control gains protection from the color of your choice until end of turn.

Sejiri Glacier enters the battlefield tapped.

{T}: Add {W}.

Flying

{U}, Sacrifice Siren Stormtamer: Counter target spell or ability that targets you or a creature you control.

Flying

Whenever Skymark Roc attacks, you may return target creature defending player controls with toughness 2 or less to its owner's hand.

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

Flying

Whenever a creature with flying dies, put a +1/+1 counter on Soulcatcher.

Whenever a Bird is put into your graveyard from the battlefield, put a feather counter on Soulcatchers' Aerie.

Bird creatures get +1/+1 for each feather counter on Soulcatchers' Aerie.

Enchant creature

Enchanted creature gets +1/+1 and has lifelink and "Whenever this creature deals combat damage to a player, draw a card."

Flying

White spells and black spells you cast cost {1} less to cast.

Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control.)

Equip {1}

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

{T}: Add {C}{C}. Activate only if you control five or more lands.

{T}: Add {C}.

{2}, {T}, Sacrifice Terminal Moraine: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

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

Whenever Thieving Magpie deals damage to an opponent, draw a card.

You have no maximum hand size.

{T}: Add {C}.

Flying, vigilance

Other nontoken creatures you control get +1/+1 and have vigilance.

Flash (You may cast this spell any time you could cast an instant.)

Flying

Other creatures you control with flying get +1/+1.

As Unclaimed Territory enters the battlefield, choose a creature type.

{T}: Add {C}.

{T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type.

Flying

Creature spells with flying you cast cost {1} less to cast.

{T}: Add {C}.

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

Flying

Creature spells with flying you cast cost {1} less to cast.

Whenever another creature with flying enters the battlefield under your control, Watcher of the Spheres gets +1/+1 until end of turn.

Flying

Other creatures you control with flying get +1/+0.

This spell costs {1} less to cast if you control a Wizard.

Counter target spell.