Optimistic Scavenger

Eerie — Whenever an enchantment you control enters and whenever you fully unlock a Room, put a +1/+1 counter on target creature.

Plains

Rip, Spawn Hunter

Survival — At the beginning of your second main phase, if Rip is tapped, reveal the top X cards of your library, where X is its power. Put any number of creature and/or Vehicle cards with different powers from among them into your hand. Put the rest on the bottom of your library in a random order.

Hushwood Verge

{T}: Add {G}.
{T}: Add {W}. Activate only if you control a Forest or a Plains.

Terramorphic Expanse

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

Grasping Longneck

Reach
When this creature dies, you gain 2 life.

Elegant Rotunda

When you unlock this door, put a +1/+1 counter on each of up to two target creatures.
(You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)

Grand Entryway

When you unlock this door, create a 1/1 white Glimmer enchantment creature token.
(You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)

Grand Entryway // Elegant Rotunda

Forest

Patched Plaything

Double strike
This creature enters with two -1/-1 counters on it if you cast it from your hand.

Spineseeker Centipede

When this creature enters, search your library for a basic land card, reveal it, put it into your hand, then shuffle.
Delirium — This creature gets +1/+2 and has vigilance as long as there are four or more card types among cards in your graveyard.

Fear of Surveillance

Vigilance
Whenever this creature attacks, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

Wickerfolk Thresher

Delirium — Whenever this creature attacks, if there are four or more card types among cards in your graveyard, look at the top card of your library. If it's a land card, you may put it onto the battlefield. If you don't put the card onto the battlefield, put it into your hand.

Cautious Survivor

Survival — At the beginning of your second main phase, if this creature is tapped, you gain 2 life.

Trapped in the Screen

Ward {2} (Whenever this enchantment becomes the target of a spell or ability an opponent controls, counter it unless that player pays {2}.)
When this enchantment enters, exile target artifact, creature, or enchantment an opponent controls until this enchantment leaves the battlefield.

Seized from Slumber

This spell costs {3} less to cast if it targets a tapped creature.
Destroy target creature.

Acrobatic Cheerleader

Survival — At the beginning of your second main phase, if this creature is tapped, put a flying counter on it. This ability triggers only once.

Fear of Abduction

As an additional cost to cast this spell, exile a creature you control.
Flying
When this creature enters, exile target creature an opponent controls.
When this creature leaves the battlefield, put each card exiled with it into its owner's hand.

Bashful Beastie

When this creature dies, manifest dread. (Look at the top two cards of your library. Put one onto the battlefield face down as a 2/2 creature and the other into your graveyard. Turn it face up any time for its mana cost if it's a creature card.)

Say Its Name

Mill three cards. Then you may return a creature or land card from your graveyard to your hand.
Exile this card and two other cards named Say Its Name from your graveyard: Search your graveyard, hand, and/or library for a card named Altanak, the Thrice-Called and put it onto the battlefield. If you search your library this way, shuffle. Activate only as a sorcery.

Kona, Rescue Beastie

Survival — At the beginning of your second main phase, if Kona is tapped, you may put a permanent card from your hand onto the battlefield.

Jump Scare

Until end of turn, target creature gets +2/+2, gains flying, and becomes a Horror enchantment creature in addition to its other types.