Promising Vein

{T}: Add {C}.
{1}, {T}, Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Adaptive Gemguard

Tap two untapped artifacts and/or creatures you control: Put a +1/+1 counter on this creature. Activate only as a sorcery.

Nurturing Bristleback

When this creature enters, create a 3/3 green Dinosaur creature token.
Forestcycling {2} ({2}, Discard this card: Search your library for a Forest card, reveal it, put it into your hand, then shuffle.)

Kutzil, Malamet Exemplar

Your opponents can't cast spells during your turn.
Whenever one or more creatures you control each with power greater than its base power deals combat damage to a player, draw a card.

Digsite Conservator

Sacrifice this creature: Exile up to four target cards from a single graveyard. Activate only as a sorcery.
When this creature dies, you may pay {4}. If you do, discover 4. (Exile cards from the top of your library until you exile a nonland card with mana value 4 or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)

Warden of the Inner Sky

As long as this creature has three or more counters on it, it has flying and vigilance.
Tap three untapped artifacts and/or creatures you control: Put a +1/+1 counter on this creature. Scry 1. Activate only as a sorcery.

Captivating Cave

{T}: Add {C}.
{1}, {T}: Add one mana of any color.
{4}, {T}, Sacrifice this land: Put two +1/+1 counters on target creature. Activate only as a sorcery.

Cenote Scout

When this creature enters, it explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on this creature, then put the card back or put it into your graveyard.)

Staggering Size

Target creature gets +3/+3 and gains trample until end of turn.

Oltec Cloud Guard

Flying
When this creature enters, create a 1/1 colorless Gnome artifact creature token.

Scampering Surveyor

When this creature enters, search your library for a basic land card or Cave card, put it onto the battlefield tapped, then shuffle.

Tinker's Tote

When this artifact enters, create two 1/1 colorless Gnome artifact creature tokens.
{W}, Sacrifice this artifact: You gain 3 life.

Helping Hand

Return target creature card with mana value 3 or less from your graveyard to the battlefield tapped.

Forest

Plains

Walk with the Ancestors

Return up to one target permanent card from your graveyard to your hand. Discover 4. (Exile cards from the top of your library until you exile a nonland card with mana value 4 or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)

Compass Gnome

When this creature enters, you may search your library for a basic land card or Cave card, reveal it, then shuffle and put that card on top.

Colossadactyl

Buried Treasure

{T}, Sacrifice this artifact: Add one mana of any color.
{5}, Exile this card from your graveyard: Discover 5. Activate only as a sorcery. (Exile cards from the top of your library until you exile a nonland card with mana value 5 or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)

Bedrock Tortoise

During your turn, creatures you control have hexproof.
Each creature you control with toughness greater than its power assigns combat damage equal to its toughness rather than its power.

Basking Capybara

Descend 4 — This creature gets +3/+0 as long as there are four or more permanent cards in your graveyard.