Light of Sanction

Enchantment

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

Lightmine Field

Enchantment

Whenever one or more creatures attack, Lightmine Field deals damage to each of those creatures equal to the number of attacking creatures.

Lucent Liminid

Enchantment Creature — Elemental (3/3)

Flying

Luminous Bonds

Enchantment — Aura

Enchant creature
Enchanted creature can't attack or block.

Luminous Wake

Enchantment — Aura

Enchant creature
Whenever enchanted creature attacks or blocks, you gain 4 life.

Mammoth Umbra

Enchantment — Aura

Enchant creature
Enchanted creature gets +3/+3 and has vigilance.
Totem armor (If enchanted creature would be destroyed, instead remove all damage from it and destroy this Aura.)

Marked by Honor

Enchantment — Aura

Enchant creature
Enchanted creature gets +2/+2 and has vigilance. (Attacking doesn't cause it to tap.)

Moat

Enchantment

Creatures without flying can't attack.

Mobilization

Enchantment

Soldier creatures have vigilance.
: Create a 1/1 white Soldier creature token.

Moonlit Wake

Enchantment

Whenever a creature dies, you gain 1 life.

Near-Death Experience

Enchantment

At the beginning of your upkeep, if you have exactly 1 life, you win the game.

Noble Purpose

Enchantment

Whenever a creature you control deals combat damage, you gain that much life.

Noble Stand

Enchantment

Whenever a creature you control blocks, you gain 2 life.

Nyxborn Courser

Enchantment Creature — Centaur Scout (2/4)

Oath of Teferi

Legendary Enchantment

When Oath of Teferi enters the battlefield, exile another target permanent you control. Return it to the battlefield under its owner's control at the beginning of the next end step.
You may activate the loyalty abilities of planeswalkers you control twice each turn rather than only once.

Observant Alseid

Enchantment Creature — Nymph (2/2)

Bestow (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.)
Vigilance
Enchanted creature gets +2/+2 and has vigilance.

Offspring's Revenge

Enchantment

At the beginning of combat on your turn, exile target red, white, or black creature card from your graveyard. Create a token that's a copy of that card, except it's 1/1. It gains haste until your next turn.

On Serra's Wings

Legendary Enchantment — Aura

Enchant creature
Enchanted creature is legendary, gets +1/+1, and has flying, vigilance, and lifelink.

Opal Avenger

Enchantment

When you have 10 or less life, if Opal Avenger is an enchantment, Opal Avenger becomes a 3/5 Soldier creature.

Opalescence

Enchantment

Each other non-Aura enchantment is a creature in addition to its other types and has base power and base toughness each equal to its mana value.