Whenever a player casts a red spell, you may pay . If you do, you gain 1 life.

+1: Whenever one or more creatures you control deal combat damage to a player this turn, draw a card, then discard a card.

−2: Create a 2/2 blue Illusion creature token with "When this creature becomes the target of a spell, sacrifice it."

−5: Create two tokens that are copies of Jace, Cunning Castaway, except they're not legendary.

Flying

When Jugan, the Rising Star dies, you may distribute five +1/+1 counters among any number of target creatures.

: You may play target snow permanent card from your graveyard this turn. If you do, it enters tapped.

Flying

When Keiga, the Tide Star dies, gain control of target creature.

: Exile the top card of your library. If it's a land card, put it into your hand. Otherwise, put a study counter on it.

: Create a 0/0 green and blue Fractal creature token. Put a +1/+1 counter on it for each different mana value among nonland cards you own in exile with study counters on them.

Dinosaur spells you cast cost less to cast.

+2: Search your library for a basic Mountain card, reveal it, put it into your hand, then shuffle.

−3: Koth, Fire of Resistance deals damage to target creature equal to the number of Mountains you control.

−7: You get an emblem with "Whenever a Mountain you control enters, this emblem deals 4 damage to any target."

Target opponent loses 2 life for each Swamp you control. Last Stand deals damage to target creature equal to the number of Mountains you control. Create a 1/1 green Saproling creature token for each Forest you control. You gain 2 life for each Plains you control. Draw a card for each Island you control, then discard that many cards.

When Legion Conquistador enters, you may search your library for any number of cards named Legion Conquistador, reveal them, put them into your hand, then shuffle.

Flying

Whenever you cast a noncreature spell, put a +1/+1 counter on Levitating Statue.

: Levitating Statue becomes a 1/1 Construct artifact creature until end of turn.

Flash

When Liliana's Standard Bearer enters, draw X cards, where X is the number of creatures that died under your control this turn.

Gift a tapped Fish (You may promise an opponent a gift as you cast this spell. If you do, they create a tapped 1/1 blue Fish creature token before its other effects.)

Choose target creature you control and target creature you don't control. Put a +1/+1 counter on the creature you control if the gift was promised. Then those creatures fight each other.

Vigilance

: Loxodon Stalwart gets +0/+1 until end of turn.

Whenever Lurking Nightstalker attacks, it gets +2/+0 until end of turn.

Creatures you control get +2/+2 until end of turn.

Whenever Matsu-Tribe Birdstalker deals combat damage to a creature, tap that creature and it doesn't untap during its controller's next untap step.

: Matsu-Tribe Birdstalker gains reach until end of turn. (It can block creatures with flying.)

Islandwalk (This creature can't be blocked as long as defending player controls an Island.)

: Tap target creature without flying.

Flying

: You may put a creature card with mana value X from your hand onto the battlefield. If you do, return Metathran Aerostat to its owner's hand.

Whenever Mindstab Thrull attacks and isn't blocked, you may sacrifice it. If you do, defending player discards three cards.

Permanents don't untap during their controllers' untap steps.

At the beginning of each player's upkeep, that player chooses a permanent for each card in their graveyard, then untaps those permanents.

: Mistform Stalker becomes the creature type of your choice until end of turn.

: Mistform Stalker gets +2/+2 and gains flying until end of turn.

: Narstad Scrapper gets +1/+0 until end of turn.

Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)

Menace

When Neva, Stalked by Nightmares enters, return target creature or enchantment card from your graveyard to your hand.

Whenever an enchantment you control is put into a graveyard from the battlefield, put a +1/+1 counter on Neva, then scry 1.

Nightstalker Engine's power is equal to the number of creature cards in your graveyard.

: Add . Nomad Stadium deals 1 damage to you.

Threshold — , , Sacrifice Nomad Stadium: You gain 4 life. Activate only if seven or more cards are in your graveyard.

As an additional cost to cast this spell, discard X cards.

Return X target cards from your graveyard to your hand. Exile Nostalgic Dreams.

You may cast Oakshade Stalker as though it had flash if you pay more to cast it.

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

Enchant creature or enchantment

Enchanted permanent is an enchantment and loses all other card types. (It still has its abilities, but it's no longer a creature.)

: Add . Spend this mana only to cast an instant or sorcery spell.

Craft with four or more red instant and/or sorcery cards (, Exile this artifact, Exile the four or more from your graveyard: Return this card transformed under its owner's control. Craft only as a sorcery.)

Sacrifice a land: You gain 3 life.

When Paladin of the Bloodstained enters, create a 1/1 white Vampire creature token with lifelink.

Whenever Panicked Bystander or another creature you control dies, you gain 1 life.

At the beginning of your end step, if you gained 3 or more life this turn, transform Panicked Bystander.

Persistent Marshstalker gets +1/+0 for each other Rat you control.

Threshold — Whenever you attack with one or more Rats, if seven or more cards are in your graveyard, you may pay . If you do, return Persistent Marshstalker from your graveyard to the battlefield tapped and attacking.

You may play an additional land this turn. (Then exile this card. You may cast the creature later from exile.)

, Pay 1 life, Sacrifice Prismatic Vista: Search your library for a basic land card, put it onto the battlefield, then shuffle.

At the beginning of your upkeep, surveil 1. You win the game if there are eight or more different names among unlocked doors of Rooms you control.

(You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)

Prowling Nightstalker can't be blocked except by black creatures.

Whenever a player casts a spell with mana value 3 or less, Pyrostatic Pillar deals 2 damage to that player.

Whenever you cast an instant or sorcery spell, you may tap two untapped creatures you control. If you do, draw a card.

: Creatures you control get +1/+1 and gain vigilance until end of turn.

Whenever Rakdos Roustabout becomes blocked, it deals 1 damage to the player or planeswalker it's attacking.

: Add , , or .

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

Flying, haste

If a spell would deal damage to you or another permanent you control, prevent that damage.

If a spell would deal damage to an opponent or a permanent an opponent controls, it deals that much damage plus 1 instead.

, : Draw a card, then discard a card.

Target creature gets +2/+2 until end of turn.

Equipped creatures you control gain indestructible until end of turn. (Damage and effects that say "destroy" don't destroy them.)

When Resistance Squad enters, if you control another Human, draw a card.

Restless Vinestalk enters tapped.

: Add or .

: Until end of turn, Restless Vinestalk becomes a 5/5 green and blue Plant creature with trample. It's still a land.

Whenever Restless Vinestalk attacks, up to one other target creature has base power and toughness 3/3 until end of turn.

Create a 5/4 green Snake creature token. Lands you control don't untap during your next untap step.

Creature tokens you control have haste.

Whenever one or more creatures attack, you may pay . If you do, creatures attacking your opponents and/or planeswalkers they control get +2/+0 until end of turn.