
Guild Summit | Enchantment | | When Guild Summit enters, you may tap any number of untapped Gates you control. Draw a card for each Gate tapped this way.
Whenever a Gate you control enters, draw a card. | Sidharth Chaturvedi

Nimbus Naiad | Enchantment Creature | Nymph | Bestow {4}{U} (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.)
Flying
Enchanted creature gets +2/+2 and has flying. | David Palumbo

Sphinx's Tutelage | Enchantment | | 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.
{5}{U}: Draw a card, then discard a card. | Slawomir Maniak

Thassa, God of the Sea | Legendary Enchantment Creature | God | Indestructible
As long as your devotion to blue is less than five, Thassa isn't a creature. (Each {U} in the mana costs of permanents you control counts toward your devotion to blue.)
At the beginning of your upkeep, scry 1.
{1}{U}: Target creature you control can't be blocked this turn. | Jason Chan

Oath of Jace | Legendary Enchantment | | When Oath of Jace enters, draw three cards, then discard two cards.
At the beginning of your upkeep, scry X, where X is the number of planeswalkers you control. | Wesley Burt