Armament of Nyx | Enchantment | Aura | Enchant creature
Enchanted creature has double strike as long as it's an enchantment. Otherwise, prevent all damage that would be dealt by enchanted creature. (A creature with double strike deals both first-strike and regular combat damage.) | Slawomir Maniak
Eagle of the Watch | Creature | Bird | Flying, vigilance | Scott Murphy
Harvestguard Alseids | Enchantment Creature | Nymph | Constellation — Whenever Harvestguard Alseids or another enchantment enters the battlefield under your control, prevent all damage that would be dealt to target creature this turn. | Igor Kieryluk
War-Wing Siren | Creature | Siren Soldier | Flying
Heroic — Whenever you cast a spell that targets War-Wing Siren, put a +1/+1 counter on War-Wing Siren. | Magali Villeneuve
Aspect of Gorgon | Enchantment | Aura | Enchant creature
Enchanted creature gets +1/+3 and has deathtouch. (Any amount of damage it deals to a creature is enough to destroy it.) | Willian Murai
Grim Guardian | Enchantment Creature | Zombie | Constellation — Whenever Grim Guardian or another enchantment enters the battlefield under your control, each opponent loses 1 life. | Ryan Barger
Nyx Infusion | Enchantment | Aura | Enchant creature
Enchanted creature gets +2/+2 as long as it's an enchantment. Otherwise, it gets -2/-2. | Jason A. Engle
Pensive Minotaur | Creature | Minotaur Warrior | | Svetlin Velinov
Kruphix's Insight | Sorcery | | Reveal the top six cards of your library. Put up to three enchantment cards from among them into your hand and the rest of the revealed cards into your graveyard. | Igor Kieryluk
Oakheart Dryads | Enchantment Creature | Nymph Dryad | Constellation — Whenever Oakheart Dryads or another enchantment enters the battlefield under your control, target creature gets +1/+1 until end of turn. | Johann Bodin