Flying

When Abhorrent Overlord enters, create a number of 1/1 black Harpy creature tokens with flying equal to your devotion to black. (Each in the mana costs of permanents you control counts toward your devotion to black.)

At the beginning of your upkeep, sacrifice a creature.

Prevent the next X damage that would be dealt to target creature this turn, where X is your devotion to white. If damage is prevented this way, Acolyte's Reward deals that much damage to any target. (Each in the mana costs of permanents you control counts toward your devotion to white.)

Double strike

Eternalize (, Exile this card from your graveyard: Create a token that's a copy of it, except it's a 4/4 black Zombie Cat with no mana cost. Eternalize only as a sorcery.)

Whenever a creature or planeswalker you control dies, you may sacrifice Ajani's Last Stand. If you do, create a 4/4 white Avatar creature token with flying.

When a spell or ability an opponent controls causes you to discard this card, if you control a Plains, create a 4/4 white Avatar creature token with flying.

Flying, vigilance

, : Exile another target creature. Return that card to the battlefield under its owner's control at the beginning of the next end step.

, , Exert Angel of Condemnation: Exile another target creature until Angel of Condemnation leaves the battlefield. (An exerted creature won't untap during your next untap step.)

Enchant creature

Enchanted creature can't be blocked.

Whenever enchanted creature attacks, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

Creatures you control have hexproof.

Creatures your opponents control lose hexproof and can't have or gain hexproof.

Enchant creature

Enchanted creature has double strike as long as it's an enchantment. Otherwise, prevent all damage that would be dealt by enchanted creature. (A creature with double strike deals both first-strike and regular combat damage.)

When Augur of Bolas enters, look at the top three cards of your library. You may reveal an instant or sorcery card from among them and put it into your hand. Put the rest on the bottom of your library in any order.

Vigilance

, : Put a +1/+1 counter on target Assembly-Worker you control.

//PRT-Prototype_Mech//

Prototype (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.)

2/2

, Sacrifice up to three permanents: If there were three or more card types among the sacrificed permanents, each opponent loses 3 life, you gain 3 life, and you draw three cards.

Sliver creatures you control get +2/+0.

Reach

Daybound (If a player casts no spells during their own turn, it becomes night next turn.)

Sacrifice a creature: Put a +1/+1 counter on Bloodflow Connoisseur.

Choose one —

• Counter target red spell.

• Destroy target red permanent.

Bring Low deals 3 damage to target creature. If that creature has a +1/+1 counter on it, Bring Low deals 5 damage to it instead.

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.)

Up to two target creatures each get +2/+0 and gain haste until end of turn.

When this creature enters, you may search your library for a basic land card, reveal it, then shuffle and put that card on top.

When Cavalry Drillmaster enters, target creature gets +2/+0 and gains first strike until end of turn. (It deals combat damage before creatures without first strike.)

You may have Clever Impersonator enter as a copy of any nonland permanent on the battlefield.

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 gets +1/+0 and gains first strike until end of turn. (It deals combat damage before creatures without first strike.)

Devoid (This card has no color.)

: Add . Spend this mana only to cast a colorless spell, activate an ability of a colorless permanent, or pay a cost that contains . ( represents colorless mana.)

Enchant player

Whenever enchanted player casts an instant or sorcery spell, each other player may copy that spell and may choose new targets for the copy they control.

Enchant creature

Enchanted creature gets -2/-2.

Scry 2, then draw a card.

Exile target permanent with mana value 4 or greater.

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

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

When Disciple of Bolas enters, sacrifice another creature. You gain X life and draw X cards, where X is that creature's power.

Destroy target attacking or blocking creature.

Scavenge (, Exile this card from your graveyard: Put a number of +1/+1 counters equal to this card's power on target creature. Scavenge only as a sorcery.)

: Whenever a card is put into an opponent's graveyard from anywhere this turn, that player loses 1 life.

: Target player mills two cards.

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

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

: Monstrosity 3. (If this creature isn't monstrous, put three +1/+1 counters on it and it becomes monstrous.)

When Ember Swallower becomes monstrous, each player sacrifices three lands of their choice.

Ward

, Discard two cards: Draft a card from Experimental Pilot's spellbook.

Experimental Pilot crews Vehicles as though its power were 2 greater.

Backup 1 (When this creature enters, put a +1/+1 counter on target creature. If that's another creature, it gains the following ability until end of turn.)

Double strike

At the beginning of each upkeep, if you lost life last turn, create a 1/1 white Soldier creature token.

When Flametongue Kavu enters, it deals 4 damage to target creature.

: Monstrosity 1. (If this creature isn't monstrous, put a +1/+1 counter on it and it becomes monstrous.)

As long as Fleecemane Lion is monstrous, it has hexproof and indestructible.

Haste

At the beginning of each upkeep, if no spells were cast last turn, transform Geier Reach Bandit.

Boast — : Tap target creature. (Activate only if this creature attacked this turn and only once each turn.)

Enchant artifact

At the beginning of your end step, Gremlin Infestation deals 2 damage to enchanted artifact's controller.

When enchanted artifact is put into a graveyard, create a 2/2 red Gremlin creature token.

: Until end of turn, target token you control becomes a green Bear creature with base power and toughness 4/4 in addition to its other colors and types.

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

At the beginning of your upkeep, exile the top card of your library face down. You may look at that card for as long as it remains exiled.

Once during each of your turns, you may play a land or cast a spell from among the cards exiled with this permanent without paying its mana cost.

Homing Lightning deals 4 damage to target creature and each other creature with the same name as that creature.

: Draw two cards. Target opponent gains control of Humble Defector. Activate only during your turn.

Flying

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

When Icefeather Aven is turned face up, you may return another target creature to its owner's hand.

, Sacrifice Insidious Fungus: Choose one —

• Destroy target artifact.

• Destroy target enchantment.

• Draw a card. Then you may put a land card from your hand onto the battlefield tapped.

Target creature gets -4/-0 until end of turn.

Investigate. (Create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

: Transform Kessig Prowler.

Whenever you activate an ability of an artifact, if it isn't a mana ability, you may pay . If you do, copy that ability. You may choose new targets for the copy.