Flying
Enigma Drake's power is equal to the number of instant and sorcery cards in your graveyard.

Flying
When Enigma Sphinx is put into your graveyard from the battlefield, put it into your library third from the top.
Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom of your library in a random order.)

At the beginning of your end step, you may sacrifice another enchantment. If you do, search your library for a creature card with converted mana cost equal to 1 plus the sacrificed enchantment's converted mana cost, put that card onto the battlefield, then shuffle your library.

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom of your library in a random order.)

Enter the God-Eternals deals 4 damage to target creature and you gain life equal to the damage dealt this way. Target player mills four cards. Amass 4. (Put four +1/+1 counters on an Army you control. If you don't control one, create a 0/0 black Zombie Army creature token first.)

Put a creature card from a graveyard onto the battlefield under your control. It gains haste until end of turn.
Fuse (You may cast one or both halves of this card from your hand.)

Enchant creature
When Ephara's Enlightenment enters the battlefield, put a +1/+1 counter on enchanted creature.
Enchanted creature has flying.
Whenever a creature enters the battlefield under your control, you may return Ephara's Enlightenment to its owner's hand.

Indestructible
As long as your devotion to white and blue is less than seven, Ephara isn't a creature.
At the beginning of each upkeep, if you had another creature enter the battlefield under your control last turn, draw a card.

Exile the top X cards of your library. You may cast instant and sorcery spells with converted mana cost X or less from among them without paying their mana costs. Then put all cards exiled this way that weren't cast into your graveyard.

Counter target multicolored spell.

Discard a creature card: Erstwhile Trooper gets +2/+2 and gains trample until end of turn. Activate this ability only once each turn.

, , Sacrifice a creature or enchantment: Counter target spell.

Exile the top five cards of your library. You may play cards exiled this way until the end of your next turn.
You may play an additional land this turn.

Choose one —
• Destroy target enchantment.
• Draw two cards.
• Target player discards two cards.

Flying

When you cycle Esper Sojourners or it dies, you may tap or untap target permanent.
Cycling (, Discard this card: Draw a card.)

As long as you control another multicolored permanent, Esper Stormblade gets +1/+1 and has flying.

Counter target creature spell. Essence Backlash deals damage equal to that spell's power to its controller.

Destroy target creature unless its controller pays life equal to its toughness. A creature destroyed this way can't be regenerated.

[+2]: Untap each enchanted permanent you control.
[−1]: Create a white Aura enchantment token named Mask attached to another target permanent. The token has enchant permanent and totem armor.
[−7]: Mill seven cards. Return all non-Aura enchantment cards from your graveyard to the battlefield, then do the same for Aura cards.
Estrid, the Masked can be your commander.