At the beginning of each player's upkeep, that player chooses target player who controls more creatures than they do and is their opponent. The first player may reveal cards from the top of their library until they reveal a creature card. If the first player does, that player puts that card onto the battlefield and all other cards revealed this way into their graveyard.

Whenever Ophidian attacks and isn't blocked, you may draw a card. If you do, Ophidian assigns no combat damage this turn.

Flying

When Owl Familiar enters the battlefield, draw a card, then discard a card.

Fading 5 (This enchantment enters the battlefield with five fade counters on it. At the beginning of your upkeep, remove a fade counter from it. If you can't, sacrifice it.)

Remove a fade counter from Parallax Wave: Exile target creature.

When Parallax Wave leaves the battlefield, each player returns to the battlefield all cards they own exiled with Parallax Wave.

Trample

When Penumbra Wurm dies, create a 6/6 black Wurm creature token with trample.

, Sacrifice Phyrexian Defiler: Target creature gets -3/-3 until end of turn.

When Pillaging Horde enters the battlefield, sacrifice it unless you discard a card at random.

(: Add or .)

Counter target spell unless its controller pays . If that player doesn't, they tap all lands with mana abilities they control and lose all unspent mana.

When Predatory Nightstalker enters the battlefield, you may have target opponent sacrifice a creature.

Untap target creature you don't control. That creature blocks this turn if able.

Draw a card.

Discard a card: Putrid Imp gains flying until end of turn.

Threshold — As long as seven or more cards are in your graveyard, Putrid Imp gets +1/+1 and can't block.

Destroy target creature with power 4 or greater.

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

Put target creature card from a graveyard onto the battlefield under your control. You lose life equal to its mana value.

Sacrifice a creature, Return Recurring Nightmare to its owner's hand: Return target creature card from your graveyard to the battlefield. Activate only as a sorcery.

Each player sacrifices a creature. Create an X/X black Demon creature token with flying, where X is the total power of the creatures sacrificed this way.

Put target creature on top of its owner's library.

Reveal the top three cards of your library and put one of them into your hand. You gain life equal to that card's mana value. Put all other cards revealed this way into your graveyard.

Discard any number of cards at random. Creatures you control get +1/+0 until end of turn for each card discarded this way.

Rocky Tar Pit enters the battlefield tapped.

, Sacrifice Rocky Tar Pit: Search your library for a Swamp or Mountain card, put it onto the battlefield, then shuffle.

Flying, haste

Fading 7 (This enchantment enters the battlefield with seven fade counters on it. At the beginning of your upkeep, remove a fade counter from it. If you can't, sacrifice it.)

Remove a fade counter from Saproling Burst: Create a green Saproling creature token. It has "This creature's power and toughness are each equal to the number of fade counters on Saproling Burst."

When Saproling Burst leaves the battlefield, destroy all tokens created with Saproling Burst. They can't be regenerated.

(: Add or .)

Flying

Dethrone (Whenever this creature attacks the player with the most life or tied for most life, put a +1/+1 counter on it.)

Whenever Scourge of the Throne attacks for the first time each turn, if it's attacking the player with the most life or tied for most life, untap all attacking creatures. After this phase, there is an additional combat phase.

(: Add or .)

Sacrifice Seal of Cleansing: Destroy target artifact or enchantment.

Parley — : Each player reveals the top card of their library. For each nonland card revealed this way, add and you gain 1 life. Then each player draws a card.

Target creature you control gains protection from the color of your choice until end of turn.

Draw a card.

Flanking (Whenever a creature without flanking blocks this creature, the blocking creature gets -1/-1 until end of turn.)

Whenever Sidar Jabari attacks, tap target creature defending player controls.

Flash

Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)

Whenever Skirk Drill Sergeant or another Goblin dies, you may pay . If you do, reveal the top card of your library. If it's a Goblin permanent card, put it onto the battlefield. Otherwise, put it into your graveyard.

Equipped creature gets +1/-1.

Whenever equipped creature dies, draw two cards.

Equip

Flying

Discard a card: Return Skywing Aven to its owner's hand.

: Add .

: Soltari Emissary gains shadow until end of turn. (It can block or be blocked by only creatures with shadow.)

Spark Spray deals 1 damage to any target.

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

Enchant creature

Enchanted creature gets +3/+3.

When enchanted creature becomes the target of a spell or ability, destroy that creature. It can't be regenerated.

At the beginning of your upkeep, if there are no Reflection tokens on the battlefield, create a 2/2 white Reflection creature token.

: Destroy target Reflection.

Starstorm deals X damage to each creature.

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

: Add .

, Sacrifice Strip Mine: Destroy target land.

When Su-Chi dies, add .

At the beginning of each player's upkeep, Sulfuric Vortex deals 2 damage to that player.

If a player would gain life, that player gains no life instead.

Exile target creature. Its controller gains life equal to its power.

When Symbiotic Wurm dies, create seven 1/1 green Insect creature tokens.

Prevent all combat damage that would be dealt this turn.

Each attacking creature doesn't untap during its controller's next untap step.

Target player loses 2 life and you gain 2 life.

Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies.)

Discard a card: Thalakos Drifters gains shadow until end of turn. (It can block or be blocked by only creatures with shadow.)

Flying

Thopter Squadron enters the battlefield with three +1/+1 counters on it.

, Remove a +1/+1 counter from Thopter Squadron: Create a 1/1 colorless Thopter artifact creature token with flying. Activate only as a sorcery.

, Sacrifice another Thopter: Put a +1/+1 counter on Thopter Squadron. Activate only as a sorcery.

Take an extra turn after this one.

: Add for each artifact you control.