Flash

Enchant creature

Enchanted creature loses all abilities and is a black Skeleton creature with base power and toughness 1/1. (It loses all other card types and creature types.)

Flying, trample

When Eater of Days enters the battlefield, you skip your next two turns.

, : Untap target attacking creature you control. Prevent all combat damage that would be dealt to and dealt by that creature this turn.

Flying

When Echo Inspector enters the battlefield, it connives. (Draw a card, then discard a card. If you discarded a nonland card, put a +1/+1 counter on this creature.)

Descend 4 — As long as there are four or more permanent cards in your graveyard, Echo of Dusk gets +1/+1 and has lifelink.

When you cast this spell, copy it for each time you've cast your commander from the command zone this game. You may choose new targets for the copies.

Create a token that's a copy of target artifact.

: Bolster 1. (Choose a creature with the least toughness among creatures you control and put a +1/+1 counter on it.)

When Ecologist's Terrarium enters the battlefield, you may search your library for a basic land card, reveal it, put it into your hand, then shuffle.

, , Sacrifice Ecologist's Terrarium: Put a +1/+1 counter on target creature. Activate only as a sorcery.

Exile the top three cards of your library. You may play those cards until end of turn. Put four time counters on each of those cards that has suspend.

Suspend 4—

Flying

ED-E My Love — Whenever you attack, if the number of attacking creatures is greater than the number of quest counters on ED-E, Lonesome Eyebot, put a quest counter on it.

, Sacrifice ED-E: Draw a card, then draw an additional card for each quest counter on ED-E.

Return target creature card from your graveyard to the battlefield.

When you discard Edgar's Awakening, you may pay . When you do, return target creature card from your graveyard to your hand.

Search your library for an Arcane card, reveal that card, put it into your hand, then shuffle.

Whenever you cast an artifact spell, create a 1/1 colorless Thopter artifact creature token with flying.

Changeling (This card is every creature type.)

Creatures target player controls get -2/-0 and lose all creature types until end of turn.

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.)

Eidolon of Countless Battles and enchanted creature each get +1/+1 for each creature you control and +1/+1 for each Aura you control.

First strike

Loyalty abilities of planeswalkers your opponents control cost more to activate.

: Add .

, : Prevent the next 2 damage that would be dealt to target legendary creature this turn.

Create X 2/2 white Samurai creature tokens with vigilance. They gain menace and haste until end of turn.

Each opponent creates X minus one 2/2 white Samurai creature tokens with vigilance.

: Target permanent you control gains protection from white until end of turn.

: Target spell or permanent becomes white until end of turn.

If a creature you control attacks, Ekundu Cyclops also attacks if able.

Search your library for a creature card, reveal that card, put it into your hand, then shuffle.

Deathtouch

Whenever another creature enters the battlefield under your control, you gain 1 life.

Whenever another creature you control dies, each opponent loses 1 life.

Creature tokens you control have training. (Whenever a creature token you control attacks with another creature with greater power, put a +1/+1 counter on that token.)

Blind Betrayal — Sacrifice another creature: Elder Arthur Maxson gains indestructible until end of turn.

: Target creature gets +X/+X until end of turn, where X is the number of creatures you control.

At the beginning of your upkeep, unless you sacrifice an Island, sacrifice Elder Spawn and it deals 6 damage to you.

Elder Spawn can't be blocked by red creatures.

When Elderfang Ritualist dies, return another target Elf card from your graveyard to your hand.

Trample, lifelink

Spells you cast that target Elderwood Scion cost less to cast.

Spells your opponents cast that target Elderwood Scion cost more to cast.

Enchant creature

Enchanted creature gets +10/+10 and has trample and annihilator 2. (Whenever it attacks, defending player sacrifices two permanents.)

Devoid (This card has no color.)

: Exile another target creature, then return it to the battlefield tapped under its owner's control. ( represents colorless mana.)

Devoid (This card has no color.)

Flying

When Eldrazi Skyspawner enters the battlefield, create a 1/1 colorless Eldrazi Scion creature token. It has "Sacrifice this creature: Add ."

Electrostatic Blast deals 2 damage to any target. When you cast your next instant or sorcery spell, exile the top three cards of your library. You may play one of those cards until end of turn.

Defender

Whenever you cast an instant or sorcery spell, Electrostatic Field deals 1 damage to each opponent.

When Electrostatic Pummeler enters the battlefield, you get (three energy counters).

Pay : Electrostatic Pummeler gets +X/+X until end of turn, where X is its power.

Magecraft — Whenever you cast or copy an instant or sorcery spell, choose target creature you control. Until end of turn, it gains "If this creature would leave the battlefield, exile it instead of putting it anywhere else" and "When this creature is put into exile, create a 4/4 blue and red Elemental creature token." (Each instance of that ability triggers separately.)

Enchant creature

Enchanted creature has ": Create X 1/1 red Elemental creature tokens with haste, where X is this creature's power. Exile them at the beginning of the next end step."

Target land you control becomes a 4/4 Elemental creature with haste until end of turn. It's still a land. It must be blocked this turn if able.

Lifelink

Whenever another creature dies, put a +1/+1 counter on Elenda, the Dusk Rose.

When Elenda dies, create X 1/1 white Vampire creature tokens with lifelink, where X is Elenda's power.

Create a 3/3 green Elephant creature token.

Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Each player creates a green Elephant creature token. Those creatures have "This creature's power and toughness are each equal to the number of creature cards in its controller's graveyard."

Vigilance

Other creatures you control get +2/+2.

Creatures your opponents control get -2/-2.

At the beginning of your upkeep, you may search your library for a basic land card, reveal that card, put it into your hand, then shuffle. If you do, you skip your draw step this turn.

Soulbond (You may pair this creature with another unpaired creature when either enters the battlefield. They remain paired for as long as you control both of them.)

As long as Elgaud Shieldmate is paired with another creature, both creatures have hexproof. (They can't be the targets of spells or abilities your opponents control.)

Investigate. Creatures your opponents control get -2/-0 until end of turn. If any of them are suspected, they're no longer suspected. (To investigate, create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

: Elite Archers deals 3 damage to target attacking or blocking creature.

First strike, vigilance

Protection from Vampires, from Werewolves, and from Zombies

When Elite Scaleguard enters the battlefield, bolster 2. (Choose a creature with the least toughness among creatures you control and put two +1/+1 counters on it.)

Whenever a creature you control with a +1/+1 counter on it attacks, tap target creature defending player controls.

Flying

When Elite Spellbinder enters the battlefield, look at target opponent's hand. You may exile a nonland card from it. For as long as that card remains exiled, its owner may play it. A spell cast this way costs more to cast.

: Look at the top X cards of your library, where X is the number of tokens you created this turn. Put one of those cards into your hand and the rest on the bottom of your library in a random order.

Choose a Background (You can have a Background as a second commander.)

Whenever you scry, the next instant or sorcery spell you cast this turn costs less to cast, where X is the number of cards looked at while scrying this way.

+2: Draw a card, then scry 2.

−3: Exile the top card of your library. Create a number of 1/1 blue Faerie Dragon creature tokens with flying equal to that card's mana value.

Elminster can be your commander.