As Arcane Adaptation enters the battlefield, choose a creature type.

Creatures you control are the chosen type in addition to their other types. The same is true for creature spells you control and creature cards you own that aren't on the battlefield.

Flying

When Archway Angel enters the battlefield, you gain 2 life for each Gate you control.

Azorius Guildgate enters the battlefield tapped.

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

Boros Guildgate enters the battlefield tapped.

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

Search your library for up to two basic land cards and/or Gate cards, put them onto the battlefield tapped, then shuffle.

As an additional cost to cast this spell, sacrifice a land.

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

Dimir Guildgate enters the battlefield tapped.

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

When District Guide enters the battlefield, you may search your library for a basic land card or Gate card, reveal it, put it into your hand, then shuffle.

This spell costs {1} less to cast for each Gate you control.

Gate Colossus can't be blocked by creatures with power 2 or less.

Whenever a Gate enters the battlefield under your control, you may put Gate Colossus from your graveyard on top of your library.

Gatebreaker Ram gets +1/+1 for each Gate you control.

As long as you control two or more Gates, Gatebreaker Ram has vigilance and trample.

Defender

When Gatecreeper Vine enters the battlefield, you may search your library for a basic land card or a Gate card, reveal it, put it into your hand, then shuffle.

Flying

Gatekeeper Gargoyle enters the battlefield with a +1/+1 counter on it for each Gate you control.

Gateway Plaza enters the battlefield tapped.

When Gateway Plaza enters the battlefield, sacrifice it unless you pay {1}.

{T}: Add one mana of any color.

When General Tazri enters the battlefield, you may search your library for an Ally creature card, reveal it, put it into your hand, then shuffle.

{W}{U}{B}{R}{G}: Ally creatures you control get +X/+X until end of turn, where X is the number of colors among those creatures.

Equipped creature gets +1/+0 for each Gate you control and has vigilance and menace. (A creature with menace can't be blocked except by two or more creatures.)

Equip {3} ({3}: Attach to target creature you control. Equip only as a sorcery.)

Golgari Guildgate enters the battlefield tapped.

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

{T}: Untap target Gate.

Gruul Guildgate enters the battlefield tapped.

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

When Guild Summit enters the battlefield, you may tap any number of untapped Gates you control. Draw a card for each Gate tapped this way.

Whenever a Gate enters the battlefield under your control, draw a card.

Whenever Hada Freeblade or another Ally enters the battlefield under your control, you may put a +1/+1 counter on Hada Freeblade.

Whenever Halimar Excavator or another Ally enters the battlefield under your control, target player mills X cards, where X is the number of Allies you control.

Rally -- Whenever Hero of Goma Fada or another Ally enters the battlefield under your control, creatures you control gain indestructible until end of turn.

Search your library for up to two land cards, put them onto the battlefield tapped, then shuffle. Then if you control three or more Deserts, create two 2/2 black Zombie creature tokens.

Whenever another green creature enters the battlefield under your control, put a +1/+1 counter on target creature.

Izzet Guildgate enters the battlefield tapped.

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

{4}{G}{W}: Support 2. (Put a +1/+1 counter on each of up to two other target creatures.)

You may have Jwari Shapeshifter enter the battlefield as a copy of any Ally creature on the battlefield.

Whenever Kabira Evangel or another Ally enters the battlefield under your control, you may choose a color. If you do, Allies you control gain protection from the chosen color until end of turn.

Rally -- Whenever Kor Entanglers or another Ally enters the battlefield under your control, tap target creature an opponent controls.

Rally -- Whenever Lantern Scout or another Ally enters the battlefield under your control, creatures you control gain lifelink until end of turn.

Rally -- Whenever Makindi Patrol or another Ally enters the battlefield under your control, creatures you control gain vigilance until end of turn.

Maze's End enters the battlefield tapped.

{T}: Add {C}.

{3}, {T}, Return Maze's End to its owner's hand: Search your library for a Gate card, put it onto the battlefield, then shuffle. If you control ten or more Gates with different names, you win the game.

Divine Intervention -- When Moon-Blessed Cleric enters the battlefield, you may search your library for an enchantment card, reveal it, then shuffle and put that card on top.

When Opal Lake Gatekeepers enters the battlefield, if you control two or more Gates, you may draw a card.

Search your library for a basic land card or Gate card, reveal it, put it into your hand, then shuffle.

Whenever Oran-Rief Survivalist or another Ally enters the battlefield under your control, you may put a +1/+1 counter on Oran-Rief Survivalist.

Orzhov Guildgate enters the battlefield tapped.

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

When Plaza of Harmony enters the battlefield, if you control two or more Gates, you gain 3 life.

{T}: Add {C}.

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

Rakdos Guildgate enters the battlefield tapped.

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

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.)

Whenever one or more +1/+1 counters are put on Scurry Oak, you may create a 1/1 green Squirrel creature token.

Whenever Seascape Aerialist or another Ally enters the battlefield under your control, you may have Ally creatures you control gain flying until end of turn.

Selesnya Guildgate enters the battlefield tapped.

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

Simic Guildgate enters the battlefield tapped.

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

Flying

Converge -- Skyrider Elf enters the battlefield with a +1/+1 counter on it for each color of mana spent to cast it.

Other enchantments you control have shroud. (They can't be the targets of spells or abilities.)

{1}, Sacrifice Sterling Grove: Search your library for an enchantment card, reveal it, then shuffle and put that card on top.

Search your library for a land card, reveal it, put it into your hand, then shuffle.

Rally -- Whenever Tajuru Beastmaster or another Ally enters the battlefield under your control, creatures you control get +1/+1 until end of turn.

Rally -- Whenever Tajuru Warcaller or another Ally enters the battlefield under your control, creatures you control get +2/+2 until end of turn.

Whenever Talus Paladin or another Ally enters the battlefield under your control, you may have Allies you control gain lifelink until end of turn, and you may put a +1/+1 counter on Talus Paladin.

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.

Whenever Turntimber Ranger or another Ally enters the battlefield under your control, you may create a 2/2 green Wolf creature token. If you do, put a +1/+1 counter on Turntimber Ranger.

As Xenograft enters the battlefield, choose a creature type.

Each creature you control is the chosen type in addition to its other types.