Flying
When this creature enters, you gain 2 life. You may search your library for a basic land card, reveal it, then shuffle and put that card on top.

This land enters tapped.
: Add or .

This land enters tapped.
: Add or .
, , Sacrifice this land: Draw a card.

Players can't draw cards.
At the beginning of each player's draw step, that player exiles the top card of their library. If it's a land card, the player puts it onto the battlefield. Otherwise, the player casts it without paying its mana cost if able.

Vanishing 4
: Add , , or .

This land enters tapped.
: Add or .
, : Surveil 1.

: Add .
, , Exile this land: Target creature's owner shuffles it into their library.

, , Sacrifice this artifact: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.
, , Sacrifice this artifact: It deals 4 damage to target creature.

When Ominous Traveler enters, draft a card from Ominous Traveler's spellbook. That card perpetually gains "You may spend mana as though it were mana of any color to cast this spell" and "When you cast this spell, return a creature named Ominous Traveler you control to its owner's hand."

Ominous Traveler's spellbook includes the following cards:

• Dominating Vampire
• Vampire Socialite
• Stromkirk Bloodthief
• Falkenrath Pit Fighter
• Wolfkin Outcast
• Howlpack Piper
• Tovolar, Dire Overlord
• Patrician Geist
• Shipwreck Sifters
• Steelclad Spirit
• Heron-Blessed Geist
• Archghoul of Thraben
• Champion of the Perished
• Headless Rider
• Bladestitched Skaab

Omnath gets +1/+1 for each unspent mana you have.
If you would lose unspent mana, that mana becomes colorless instead.
Landfall — Whenever a land you control enters, add .

When this artifact enters, draw a card.
, , Sacrifice this artifact: Add one mana of any color.
, , Sacrifice this artifact: You gain 3 life.

Changeling
Omnipresent Impostor has all card names.
As you search your library for one or more cards, you may choose Omnipresent Impostor as one of those cards. (For example, if you search for two land cards, you may find Omnipresent Impostor and a land card.)

After an Adventure resolves, you can place the exiled card here. You may cast the creature from exile.

This Equipment can be attached only to a creature with power 3 or greater.
Equipped creature gets +3/+0 and has trample.
Equip

All creatures are black and have deathtouch.

Whenever chaos ensues, creatures you control get +1/+0 and gain first strike until end of turn.

This land enters tapped.
: Add .

Defender
Creatures with flying your opponents control get -1/-0.

When you set this scheme in motion, each opponent sacrifices a creature. Then each opponent who didn't sacrifice a creature discards two cards.