Haste
Ward—Pay 2 life.
Whenever you cast a spell that targets Efimia of the Horse, create a 1/1 white Human creature token if this is the first time this ability has resolved this turn. If it's the second time, creatures you control get +1/+0 and gain haste until end of turn. If it's the third time, creatures you control gain menace until end of turn.

When Eidolon of Empty Thoughts dies, create a Treasure token.
{6}: Create a 2/1 red Soldier creature token. Activate only as a sorcery and only if your devotion to red is three or more.

When Elderflame Pilgrims enters the battlefield, it deals 2 damage to target player or planeswalker.
Wander {5}{R}

Flash
When Eleanor, Royal Captain enters, target legendary creature gains indestructible until end of turn.
Cybersoul {4}{W/B}

As long as it's your turn, Elektes has first strike.
At the beginning of combat on your turn, target creature you control gets +X/+0 until end of turn, where X is your devotion to red and white.

Elephant of the Golden Palace enters the battlefield with your choice of a lifelink counter or an indestructible counter on it if {W} was spent to cast it. The same is true for flying or hexproof and {U}, deathtouch or menace and {B}, haste or double strike and {R}, and vigilance or trample and {G}.

Whenever Emberwalker enters the battlefield or attacks, exile the top card of your library. You may play it until end of turn.
As long as you're ancient, you may play cards exiled with Emberwalker.

Whenever you amp it up, target creature can't block this turn.

Vigilance
At the beginning of combat on your turn, if you've spent at least five mana to cast spells this turn, put a +1/+1 counter on Encampment Sentinel.

{2}{G}: Endangered Scinok gets +1/+1 until end of turn. This ability costs {1} less to activate until end of turn.

Vigilance, reach
When Enduring Jentil enters the battlefield, create an artifact token named Menhir with “{2}, {T}, Exile a creature or land card from your graveyard: Draw a card. You gain 2 life.”
Whenever Enduring Jentil attacks, you may sacrifice an artifact. If you do, Enduring Jentil deals damage equal to its power to target creature.

Ward {1}
Whenever one or more counters are put on Enlightened Naturalist, draw a card for each kind of counter put on it on it that it didn't have already.

When Envoy of the Unknown enters the battlefield, you may have each player draw a card.

Flying, first strike, vigilance

Aura spells you cast cost {1} less to cast.
When Ephara's Oracle enters the battlefield, look at the top five cards of your library. You may reveal an enchantment card from among them and put it on the top of your library. Put the rest on the bottom of your library in a random order.

Whenever Epicerie Liberator attacks, create a Food token.
Whenever you sacrifice a Food, you may put your choice of counter from among trample, vigilance, or +1/+1 on target creature you control.

Deathtouch
Other Gorgons, Snakes, and Basilisks you control get +1/+1.
Whenever another creature with deathtouch you control deals combat damage to a player or planeswalker, put a +1/+1 counter on Evridiki.

Double strike
Whenever you attack, mill two cards. For each of the milled cards, you may cast it, then if you don't, creatures you control get +1/+0 until end of turn.

Creatures can't attack you or a planeswalker you control unless their controller pays {1} for each of those creatures beyond the first.

Whenever you amp it up, put a +1/+1 counter on Ferva Sensation.
Remove two counters from Ferva Sensation: It phases out.

Trample
Whenever you gain control of a permanent you don't own or a permanent you don't own enters under your control, it and Field Opportunist each get +2/+0 and gain haste until end of turn.

When Firebrand Disciple enters the battlefield, you may exile an instant or sorcery card from your graveyard. If you do, draw a card.

Reach
{3}{R/G}: Flametip Goliath gets +2/+0, gains trample, and becomes a Giant in addition to its other types until end of turn.

As long as its not your turn, spells you cast cost {1} less to cast.

Flash
Flying
{VP}{VP}{VP}: Draw a card.