Defender; reach (This creature can block creatures with flying.)

Whenever Aether Membrane blocks a creature, return that creature to its owner's hand at end of combat.

Flash (You may cast this spell any time you could cast an instant.)

Enchant creature

Enchanted creature gets +1/+1, has reach, and can block creatures with shadow as though they didn't have shadow. (Creatures with reach can block creatures with flying.)

Flying, lifelink

When Aetherborn Marauder enters the battlefield, move any number of +1/+1 counters from other permanents you control onto Aetherborn Marauder.

Constellation — Whenever Agent of Erebos or another enchantment enters the battlefield under your control, exile target player's graveyard.

: Add one mana of any color.

, : Up to X target creatures you control each gain haste until end of turn and can't be blocked this turn except by creatures with haste, where X is the number of Bobbleheads you control as you activate this ability.

Outlast (, : Put a +1/+1 counter on this creature. Outlast only as a sorcery.)

Each creature you control with a +1/+1 counter on it has first strike.

Draw a card for each Bird on the battlefield.

Whenever one or more modified creatures you control attack, untap all modified creatures you control. After this phase, there is an additional combat phase. This ability triggers only once each turn. (Equipment, Auras you control, and counters are modifications.)

Whenever a nontoken modified creature you control dies, create a 1/1 colorless Spirit creature token. (Equipment, Auras you control, and counters are modifications.)

Haste

Whenever Akoum Battlesinger or another Ally enters the battlefield under your control, you may have Ally creatures you control get +1/+0 until end of turn.

Flying, haste

Akoum Firebird attacks each combat if able.

Landfall — Whenever a land enters the battlefield under your control, you may pay . If you do, return Akoum Firebird from your graveyard to the battlefield.

Choose a color. Creatures you control gain protection from the chosen color until end of turn.

Cycling (, Discard this card: Draw a card.)

, : Prevent all damage that would be dealt to you this turn by attacking creatures without flying.

When Alabaster Host Intercessor enters the battlefield, exile target creature an opponent controls until Alabaster Host Intercessor leaves the battlefield.

Plainscycling (, Discard this card: Search your library for a Plains card, reveal it, put it into your hand, then shuffle.)

Flying, vigilance

: Target creature you control gains lifelink until end of turn. (Damage dealt by the creature also causes its controller to gain that much life.)

Defender (This creature can't attack.)

: Prevent the next 1 damage that would be dealt to any target this turn.

Vigilance

When Alaborn Zealot blocks a creature, destroy that creature and Alaborn Zealot.

Cleave (You may cast this spell for its cleave cost. If you do, remove the words in square brackets.)

Take an extra turn after this one. During that turn, damage can't be prevented. At the beginning of that turn's end step, you lose the game.

Exile Alchemist's Gambit.

Vigilance

At the beginning of your end step, you gain 1 life for each creature you control with vigilance.

: Tap target Wall.

Other artifact creatures you control have haste.

Whenever one or more artifact creatures you control attack, Alibou, Ancient Witness deals X damage to any target and you scry X, where X is the number of tapped artifacts you control.

Whenever you put one or more counters on a permanent or player, All Will Be One deals that much damage to target opponent, creature an opponent controls, or planeswalker an opponent controls.

Trample

: Almighty Brushwagg gets +3/+3 until end of turn.

Target creature an opponent controls deals damage equal to its power to each other creature that player controls, then each of those creatures deals damage equal to its power to that creature.

Whenever a creature an opponent controls dies, Altac Bloodseeker gets +2/+0 and gains first strike and haste until end of turn. (It deals combat damage before creatures without first strike, and it can attack and as soon as it comes under your control.)

As an additional cost to cast this spell, sacrifice a creature.

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

Ward—Pay 3 life.

Whenever you gain life, Amalia Benavides Aguirre explores. Then destroy all other creatures if its power is exactly 20. (To have this creature explore, reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on this creature, then put the card back or put it into your graveyard.)

: Target player mills three cards.

Haste

Whenever Amber Gristle O'Maul attacks, you may discard your hand. If you do, draw a card for each player being attacked.

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

Whenever a player plays a spell that counters a spell that has been played or a player plays a spell that comes into play with counters, that player may counter the next spell played or put an additional counter on a permanent that has already been played, but not countered.

Fabricate 1 (When this creature enters the battlefield, put a +1/+1 counter on it or create a 1/1 colorless Servo artifact creature token.)

Ambitious Dragonborn enters the battlefield with X +1/+1 counters on it, where X is the greatest power among creatures you control and creature cards in your graveyard.

When Ambulatory Edifice enters the battlefield, you may pay 2 life. When you do, target creature gets -1/-1 until end of turn.

Whenever Ambuscade Shaman or another creature enters the battlefield under your control, that creature gets +2/+2 until end of turn.

Dash (You may cast this spell for its dash cost. If you do, it gains haste, and it's returned from the battlefield to its owner's hand at the beginning of the next end step.)

Forests you control are 1/1 green Elf creatures that are still lands.

, Sacrifice an Elf: Target creature gets +3/+3 until end of turn.

Trample

When Ambush Krotiq enters the battlefield, return another creature you control to its owner's hand.

First strike, haste

Changeling (This card is every creature type.)

: Target creature gains all creature types until end of turn.

: Target creature loses all creature types until end of turn.

Flying

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

: Another target Minotaur creature gets +1/+1 until end of turn.

, : Anaba Shaman deals 1 damage to any target.

Enchant creature

Enchanted creature has lifelink.

If Ancestor's Embrace would be put into a graveyard from anywhere, exile it instead.

You gain 2 life for each card in your graveyard.

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

: Regenerate Ancient Silverback. (The next time this creature would be destroyed this turn, it isn't. Instead tap it, remove all damage from it, and remove it from combat.)

Flying

At the beginning of your upkeep, return target Spirit card from your graveyard to your hand.