Haste

Whenever Éomer of the Riddermark attacks, if you control a creature with the greatest power among creatures on the battlefield, create a 1/1 white Human Soldier creature token.

Flying

When Eon Frolicker enters, if you cast it, target opponent takes an extra turn after this one. Until your next turn, you and planeswalkers you control gain protection from that player. (You and planeswalkers you control can't be targeted, dealt damage, or enchanted by anything controlled by that player.)

First strike

At the beginning of combat on your turn, if another Human entered the battlefield under your control this turn, create two 2/2 red Human Knight creature tokens with trample and haste. Then if you control six or more Humans, draw a card.

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.

Enchant creature

When Ephara's Enlightenment enters, put a +1/+1 counter on enchanted creature.

Enchanted creature has flying.

Whenever a creature you control enters, you may return Ephara's Enlightenment to its owner's hand.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)

Target creature gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.)

Exile target creature with mana value 3 or greater.

Flash

Enchant creature

Enchanted creature gets +5/+5 and has trample.

Target player sacrifices a land.

Threshold — Each player sacrifices all lands they control instead if seven or more cards are in your graveyard.

Reveal the top X plus one cards of your library and separate them into two piles. An opponent chooses one of those piles. Put that pile into your hand and the other into your graveyard.

Veil of Time — Whenever Epistolary Librarian attacks, you may cast a spell with mana value X or less from your hand without paying its mana cost, where X is the number of attacking creatures.

Epochrasite enters with three +1/+1 counters on it if you didn't cast it from your hand.

When Epochrasite dies, exile it with three time counters on it and it gains suspend. (At the beginning of its owner's upkeep, they remove a time counter. When the last is removed, they may cast this card without paying its mana cost. It has haste.)

Whenever you cast a creature spell, you may pay . If you do, return target creature to its owner's hand.

At the beginning of your upkeep, for each land target player controls in excess of the number you control, choose a land that player controls, then the chosen permanents phase out. Repeat this process for artifacts and creatures. (While they're phased out, they're treated as though they don't exist. They phase in before that player untaps during their next untap step.)

Whenever an artifact or Artificer you control enters, you may pay . If you do, you get (two energy counters).

Pay six , Sacrifice Era of Innovation: Draw three cards.

Flying, lifelink, hexproof from planeswalkers

Boast — , Sacrifice a creature: Each opponent sacrifices a creature or planeswalker. (Activate only if this creature attacked this turn and only once each turn.)

Whenever an opponent casts their first spell each turn, counter that spell.

Haste

Whenever Erdwal Ripper deals combat damage to a player, put a +1/+1 counter on it.

Bestow (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.)

Discard a creature card: Erebos's Emissary gets +2/+2 until end of turn. If Erebos's Emissary is an Aura, enchanted creature gets +2/+2 until end of turn instead.

Enchanted creature gets +3/+3.

As long as your opponents control no creatures, Erebos's Titan has indestructible. (Damage and effects that say "destroy" don't destroy it.)

Whenever a creature card leaves an opponent's graveyard, you may discard a card. If you do, return Erebos's Titan from your graveyard to your hand.

At the beginning of your end step, if Erg Raiders didn't attack this turn, Erg Raiders deals 2 damage to you unless it came under your control this turn.

Each creature that's enchanted by an Aura you control can't attack you or planeswalkers you control.

At the beginning of your end step, each opponent loses X life and you gain X life, where X is the number of Auras you control.

Destroy target tapped creature. You gain 2 life.

Target opponent discards two cards. Create a Wicked Role token attached to up to one target creature you control. (If you control another Role on it, put that one into the graveyard. Enchanted creature gets +1/+1. When this Aura is put into a graveyard, each opponent loses 1 life.)

This spell costs less to cast for each different mana value among instant and sorcery cards in your graveyard.

Flying, prowess

Whenever you cast your second spell each turn, create a 4/4 red Dragon Elemental creature token with flying and prowess.

Enchant land

At the beginning of the upkeep of enchanted land's controller, destroy that land unless that player pays or 1 life.

Flash

Flying

You may look at the top card of your library any time.

You may cast spells with flash or flying from the top of your library.

Flash

Defender, haste

, : Copy target spell you control that wasn't cast. You may choose new targets for the copy.

Trample

Whenever you cast an instant or sorcery spell, Erratic Cyclops gets +X/+0 until end of turn, where X is that spell's mana value.

Choose target creature. Reveal cards from the top of your library until you reveal a nonland card. That creature gets +X/-X until end of turn, where X is that card's mana value. Put all cards revealed this way on the bottom of your library in any order.

, : Draw a card, then discard a card.

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

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

Phasing (This phases in or out before you untap during each of your untap steps. While it's phased out, it's treated as though it doesn't exist.)

When Ertai's Familiar phases out or leaves the battlefield, mill three cards.

: Until your next upkeep, Ertai's Familiar can't phase out.

This spell costs less to cast if an opponent cast two or more spells this turn.

Counter target spell.

When Ertha Jo, Frontier Mentor enters, create a 1/1 red Mercenary creature token with ": Target creature you control gets +1/+0 until end of turn. Activate only as a sorcery."

Whenever you activate an ability that targets a creature or player, copy that ability. You may choose new targets for the copy.

Escape Artist can't be blocked.

, Discard a card: Return Escape Artist to its owner's hand.

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.

Whenever Escaped Experiment attacks, target creature an opponent controls gets -X/-0 until end of turn, where X is the number of artifacts you control.

Vigilance

: Add one mana of any color.

Other legendary creatures you control have vigilance and ": Add one mana of any color."

Flying

Spells your opponents cast that target one or more commanders you control cost more to cast.

Partner (You can have two commanders if both have partner.)

Whenever you sacrifice Esoteric Duplicator or another artifact, you may pay . If you do, at the beginning of the next end step, create a token that's a copy of that artifact.

, Sacrifice Esoteric Duplicator: Draw a card.

, : Creatures you control get +1/+1 until end of turn. This ability costs less to activate if you control a legendary creature.

Essence Extraction deals 3 damage to target creature and you gain 3 life.

Put two +1/+1 counters on target creature. It gains lifelink until end of turn.

Creatures you control enter as a copy of Essence of the Wild.

Whenever a Sliver deals damage, its controller gains that much life.

+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 umbra 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.

Whenever Estwald Shieldbasher attacks, you may pay . If you do, it gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.)

Trample, indestructible

Whenever Etali, Primal Sickness deals combat damage to a player, they get that many poison counters. (A player with ten or more poison counters loses the game.)