As long as you control exactly one creature, that creature has vigilance and ward .
Whenever a creature you control attacks alone, seek two nonland cards, then discard a card.

Enchant creature or Vehicle
When this Aura enters, you may mill two cards.
Fathomless descent — Enchanted permanent gets -X/-0, where X is the number of permanent cards in your graveyard.

: Shuffle your library.
: Look at the top X cards of your library, then put them back in any order.

Whenever a player casts a spell, if a card with the same name as that spell is in a graveyard and that player didn't say "Sorry" before casting the spell, any other player may say "Sorry". If one does, counter that spell.
Whenever a player says "Sorry" at any other time, Sorry deals 2 damage to that player.

Whenever an opponent casts a creature spell, this enchantment deals 2 damage to that player unless they pay .

Enchant creature
Enchanted creature gets -2/-0.
If Spectral Binding would be put into a graveyard from anywhere, exile it instead.

Enchant creature
Enchanted creature has shroud as long as it's untapped.

Enchant creature
Enchanted creature gets +2/+2 and has flying.

Enchant creature
Enchanted creature doesn't untap during its controller's untap step.
When enchanted creature becomes the target of a spell, sacrifice this Aura.

Enchant instant card in a graveyard
Whenever you cast a sorcery spell, copy the enchanted instant card. You may cast the copy without paying its mana cost. If you do, exile the enchanted card and attach this Aura to another instant card in a graveyard.

Whenever you draw a card, target opponent mills two cards. If two nonland cards that share a color were milled this way, repeat this process.
: Draw a card, then discard a card.

Enchant creature
Enchanted creature is a Citizen with base power and toughness 1/1. It has defender and loses all other abilities. (It also loses all other creature types.)

Enchant creature
You control enchanted creature.
Enchanted creature gets +2/+2 and has flying.

Flash
Enchant creature
Enchanted creature gets -X/-0, where X is the number of cards in your graveyard.

Enchant land
When this Aura enters, draw a card.
Enchanted land is an Island.

Sorcery spells cost more to cast.

When a player casts a spell, sacrifice this enchantment. If you do, each of that player's opponents draws three cards.

Enchant creature you control
When this Aura enters, you may pay . If you do, draw X cards.
Whenever you draw a card, put a +1/+1 counter on enchanted creature.

Enchant creature
When this Aura enters, tap enchanted creature.
Enchanted creature doesn't untap during its controller's untap step.

Flash
Enchant creature you control
When this Aura enters, enchanted creature gains hexproof until end of turn.
Enchanted creature gets +1/+1.

Players skip their untap steps.
At the beginning of your upkeep, sacrifice this enchantment unless you pay .

Enchant creature
Enchanted creature doesn't untap during its controller's untap step.
: Attach this Aura to target creature.

Enchant creature
Enchanted creature has base power and toughness 0/2, has defender, and loses all other abilities.

Prevent all combat damage that would be dealt to and dealt by creatures you control.

Enchant creature
When this Aura enters, tap enchanted creature.
Enchanted creature doesn't untap during its controller's untap step.
: Shuffle enchanted creature into its owner's library, then manifest dread. Activate only as a sorcery.

Enchant artifact
You control enchanted artifact.

Enchant enchantment
You control enchanted enchantment.

At the beginning of your upkeep, mill three cards. Then if your library has no cards in it, exile this enchantment and put five cards from your graveyard on top of your library in any order.

Flash
Enchant artifact or creature
When this Aura enters, tap enchanted permanent.
Enchanted permanent loses all abilities and doesn't untap during its controller's untap step.

Ward
Whenever you cast your second spell each turn, copy it, except the copy isn't legendary. You may choose new targets for the copy. (A copy of a permanent spell becomes a token.)