Until end of turn, target creature gets +X/+X, where X is the number of differently named lands you control.

Enchant creature
When Grasp of the Yeti enters, you may destroy target creature with flying, artifact, or enchantment.
Enchanted creature gets +3/+3.

Landfall — Whenever Grassroots Campaigners or a land you control enters, make a pledge.

At the beginning of combat on your turn, put a +1/+1 counter on equipped creature.
Equipped creature has flying as long as it has two or more +1/+1 counters on it.
Equipped creature has double strike as long as it has four or more +1/+1 counters on it.
Equip {2}

When Gray Merchant of Asphodel enters, each opponent loses X life, where X is your devotion to black. You gain life equal to the life lost this way.

Whenever Grazing Yaks becomes tapped, if you have at least 3 life more than your starting life total, put a +1/+1 counter on it.
{T}: You gain 1 life.

When Gubernatorial Fundraiser enters, make a pledge.
Whenever you spend three or more colors of mana to cast a spell, create a Treasure token.

Flash
Gulping Meqmaw's power is equal to the total number of permanents with flash you control and instant cards in your graveyard.
Whenever you cast a spell during an opponent's turn, mill two cards.

Whenever you attack, attacking creatures you control get +1/+1 until end of turn.

Hallowed Chamber enters tapped unless you control a basic non-Swamp land.
{T}: Add {B}.
{1}, {T}, Sacrifice Hallowed Chamber: Create two Treasure tokens.

Surveil 1, then draw a card. Exile Harbor Mail with a stamp counter on it.
When you cast a spell for its surface cost, if Harbor Mail is exiled with a stamp counter, you may pay {U} and put it into your graveyard. If you do, surveil 1, then draw a card.

Landfall — Whenever a land you control enters, you may attach Hard Stone to target creature.
Equipped creature gets +3/+3.
Equip {3}

When Hardlight Hedron enters, draw two cards, then discard a card.
{U}, {T}, Sacrifice Hardlight Hedron: Scry 2.

Vigilance
When Hardlight Paragon enters, distribute two +1/+1 counters among one or two target creatures.

At the beginning of your end step, if you control two or more other enchantments, create a 1/1 white Human creature token.

Search your graveyard and/or library for a basic land card, reveal it, put it into your hand, then shuffle.
Surface {G}

Flying
Whenever you draw your second card each turn, put a +1/+1 counter on Haubay's Familiar.

Hazakh District enters tapped unless you control an Island, a Swamp, and a Mountain.
{T}: Add {U}, {B}, or {R}.

As an additional cost to cast creature spells, you may pay {X}, where X is Heartbonder's power. When you do, put a +1/+1 counter on Heartbonder.

{2}, Sacrifice Helm of the Shattered Realm: Destroy target artifact or enchantment. Activate only as a sorcery.
Equipped creature gets +1/+1 and has ward {2}.
Equip {1}

At the beginning of your end step, if you cast no spells this turn, surveil 1.
Spellcharge 6

High Teqien enters tapped unless you control a basic non-Island land.
{T}: Add {U}.
{2}{U}, {T}, Sacrifice High Teqien: Gain control of target land. Its owner may search their library for a basic land card, put it onto the battlefield, then shuffle.

Lifelink
As long as you have at least 3 life more than your starting life total, each creature you control with toughness greater than its power assigns combat damage equal to its toughness rather than its power.

Menace
Whenever Highseas Renegade deals combat damage to a player, exile the top card of their library. You may play that card until the end of your next turn, and mana of any type can be spent to cast it.

Ward {3}
Whenever Horror of the Mystic Sea attacks, defending player mills two cards. If they milled two nonland cards this way, Horror of the Mystic Sea can't be blocked this turn.