Convoke
Covenant of Blood deals 4 damage to any target and you gain 4 life.

Reveal the top three cards of your library. Target opponent may choose to put those cards into your hand. If they don't, put those cards into your graveyard and draw five cards.

As this enchantment enters, choose a creature type.
Creatures of the chosen type have fear.

Cumulative upkeep ( can be paid with one mana from a snow permanent.)
If a creature would deal combat damage to you and/or one or more creatures you control, prevent X of that damage, where X is the number of age counters on this enchantment.
: Put an age counter on this enchantment.

Visit — Drop three cards you own from outside the game one at a time onto the playing area from a height of at least one foot (about 0.3 meters). If those cards completely cover Cover the Spot, claim the prize!
Prize — You get , then you may put a sticker on a nonland permanent you own. Sacrifice Cover the Spot, then open an Attraction.

When this creature enters, destroy target creature you don't control that was dealt damage this turn.
Disturb

This creature can't be blocked.

Ninjutsu
Whenever this creature deals combat damage to a player, you may put an artifact card with mana value less than or equal to that damage from your hand onto the battlefield.

Flying
Whenever this creature attacks, gain control of target permanent you own but don't control.
Disguise
When this creature is turned face up, target opponent gains control of any number of target permanents you control. Draw a card for each one they gained control of this way.

When this artifact enters, draw three cards.
: Add three mana of any one color.
Whenever one or more creatures an opponent controls attack you and aren't blocked, that player draws three cards and gains control of this artifact. Untap it.

Flying
Whenever this creature attacks, you may goad target creature defending player controls.

This spell costs less to cast for each creature in your party. (Your party consists of up to one of each Cleric, Rogue, Warrior, and Wizard.)
Search your library for a card, put it into your hand, then shuffle. If you have a full party, you may cast a spell with mana value 4 or less from your hand without paying its mana cost.

When this creature dies, mill three cards.
Disturb

Flying
When you control no artifacts, sacrifice this creature.

Each player chooses up to two creatures they control, then sacrifices the rest. Then you create a tapped Treasure token for each creature your opponents control.

Flying, deathtouch
If Covetous Geist would be put into a graveyard from anywhere, exile it instead.

Target opponent reveals their hand. You choose a nonland card from that player's graveyard or hand and exile it. You may cast that card for as long as it remains exiled, and you may spend mana as though it were mana of any color to cast that spell.

Look at the top four cards of your library. You may reveal a Mutant, Ninja, Turtle, or land card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

Target creature can't block this turn and becomes a Coward in addition to its other types until end of turn.
Time travel.

Killer deals 3 damage to target creature and each other creature that shares a creature type with it.

Whenever a creature becomes the target of a spell or ability, return that creature to its owner's hand. (It won't be affected by the spell or ability.)

Enchant creature
Enchanted creature can't attack or block unless its controller pays for each card in your hand.

Creatures your opponents control get -1/-1 until end of turn.

Enchant creature
: Untap enchanted creature.
Umbra armor

This creature gets +1/+1 as long as you control another green creature.

Emerge from artifact
When this creature enters, target opponent exiles the top card of their library, a card at random from their graveyard, and a card at random from their hand. You may cast a spell from among cards exiled this way without paying its mana cost.

Vanishing 3
When this enchantment enters and at the beginning of your first main phase, exile target creature an opponent controls until this enchantment leaves the battlefield.