Calix, Guided by Fate

Constellation — Whenever Calix or another enchantment you control enters, put a +1/+1 counter on target creature.
Whenever Calix or an enchanted creature you control deals combat damage to a player, you may create a token that's a copy of a nonlegendary enchantment you control. Do this only once each turn.

Tanglespan Lookout

Whenever an Aura you control enters, draw a card.

Eidolon of Blossoms

Constellation — Whenever this creature or another enchantment you control enters, draw a card.

Kediss, Emberclaw Familiar

Whenever a commander you control deals combat damage to an opponent, it deals that much damage to each other opponent.
Partner (You can have two commanders if both have partner.)

Mesa Enchantress

Whenever you cast an enchantment spell, you may draw a card.

All That Glitters

Enchant creature
Enchanted creature gets +1/+1 for each artifact and/or enchantment you control.

Ethereal Armor

Enchant creature
Enchanted creature gets +1/+1 for each enchantment you control and has first strike.

Danitha, New Benalia's Light

Vigilance, trample, lifelink
Once during each of your turns, you may cast an Aura or Equipment spell from your graveyard.

Herald of the Pantheon

Enchantment spells you cast cost {1} less to cast.
Whenever you cast an enchantment spell, you gain 1 life.

Danitha Capashen, Paragon

First strike, vigilance, lifelink
Aura and Equipment spells you cast cost {1} less to cast.

Enchantress's Presence

Whenever you cast an enchantment spell, draw a card.

Winds of Rath

Destroy all creatures that aren't enchanted. They can't be regenerated.

Transcendent Envoy

Flying
Aura spells you cast cost {1} less to cast.

Uril, the Miststalker

Hexproof (This creature can't be the target of spells or abilities your opponents control.)
Uril gets +2/+2 for each Aura attached to it.

Sanctum Weaver

{T}: Add X mana of any one color, where X is the number of enchantments you control.

Unquestioned Authority

Enchant creature
When this Aura enters, draw a card.
Enchanted creature has protection from creatures.