Riddle of Lightning

Instant

Choose target creature or player. Scry 3, then reveal the top card of your library. Riddle of Lightning deals damage equal to that card's converted mana cost to that creature or player. (To scry 3, look at the top three cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)

Riptide Chimera

Enchantment Creature - Chimera

Flying

At the beginning of your upkeep, return an enchantment you control to its owner's hand.

"I want one."
-Kiora

Rise of Eagles

Sorcery

Put two 2/2 blue Bird enchantment creature tokens with flying onto the battlefield. Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

An offering to the sea brings an insight from the stars.

Ritual of the Returned

Instant

Exile target creature card from your graveyard. Put a black Zombie creature token onto the battlefield. Its power is equal to that card's power and its toughness is equal to that card's toughness.

A mask forged to avenge a death forgotten.

Rollick of Abandon

Sorcery

All creatures get +2/-2 until end of turn.

"Embrace every moment, for it could be your last."
-Xenagos, god of revels

Rotted Hulk

Creature - Elemental

The hulk rose from the sea and loomed over the Champion. Pinned beneath the twisting, rotted planks of wood was the body of Kaliaros, the helmsman of her former crew, and beside him the captain, Photine.
-The Theriad

Rouse the Mob

Instant

Strive - Rouse the Mob costs more to cast for each target beyond the first.

Any number of target creatures each get +2/+0 and gain trample until end of turn.

Sage of Hours

Creature - Human Wizard

Heroic - Whenever you cast a spell that targets Sage of Hours, put a +1/+1 counter on it.

Remove all +1/+1 counters from Sage of Hours: For each five counters removed this way, take an extra turn after this one.

Satyr Grovedancer

Creature - Satyr Shaman

When Satyr Grovedancer enters the battlefield, put a +1/+1 counter on target creature.

"Some of my kin dance for themselves, without greater purpose. Nylea gives me purpose, and with it strength."

Satyr Hoplite

Creature - Satyr Soldier

Heroic - Whenever you cast a spell that targets Satyr Hoplite, put a +1/+1 counter on Satyr Hoplite.

"Xenagos has become what he once despised: a tyrant and an oppressor."

Scourge of Fleets

Creature - Kraken

When Scourge of Fleets enters the battlefield, return each creature your opponents control with toughness X or less to its owner's hand, where X is the number of Islands you control.

Setessan Tactics

Instant

Strive - Setessan Tactics costs more to cast for each target beyond the first.

Until end of turn, any number of target creatures each get +1/+1 and gain ": This creature fights another target creature."

Sightless Brawler

Enchantment Creature - Human Warrior

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.)

Sightless Brawler can't attack alone.

Enchanted creature gets +3/+2 and can't attack alone.

Sigiled Skink

Creature - Lizard

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

The runes seem to come alive as it moves, rippling like slow flames across its scales.

Sigiled Starfish

Creature - Starfish

: Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

Kruphix hid the most dire prophecies about humankind where humans would never find them and tritons wouldn't care to read them.

Silence the Believers

Instant

Strive - Silence the Believers costs more to cast for each target beyond the first.

Exile any number of target creatures and all Auras attached to them.

Skybind

Enchantment

Constellation - Whenever Skybind or another enchantment enters the battlefield under your control, exile target nonenchantment permanent. Return that card to the battlefield under its owner's control at the beginning of the next end step.

Skyspear Cavalry

Creature - Human Soldier

Flying

Double strike (This creature deals both first-strike and regular combat damage.)

Pray her spear reaches you first. Her griffin is less kind.

Solidarity of Heroes

Instant

Strive - Solidarity of Heroes costs more to cast for each target beyond the first.

Choose any number of target creatures. Double the number of +1/+1 counters on each of them.

Spawn of Thraxes

Creature - Dragon

Flying

When Spawn of Thraxes enters the battlefield, it deals damage to target creature or player equal to the number of Mountains you control.

Sparks from Purphoros's forge fill the belly of every dragon.

Spirespine

Enchantment Creature - Beast

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.)

Spirespine blocks each turn if able.

Enchanted creature gets +4/+1 and blocks each turn if able.

Spite of Mogis

Sorcery

Spite of Mogis deals damage to target creature equal to the number of instant and sorcery cards in your graveyard. Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

Spiteful Blow

Sorcery

Destroy target creature and target land.

"Only a fool takes Phenax at his word. What do you expect from a god born of lies and betrayal?"
-Verenes, priest of Iroas

Squelching Leeches

Creature - Leech

Squelching Leeches's power and toughness are each equal to the number of Swamps you control.

Leeches are sacred to followers of Pharika for drawing poison from a wound, but feared by everyone else for drawing blood from the flesh.

Starfall

Instant

Starfall deals 3 damage to target creature. If that creature is an enchantment, Starfall deals 3 damage to that creature's controller.

"The most brilliant stars are not born of Nyx."
-Rhexenor, Akroan flamespeaker

Stonewise Fortifier

Creature - Human Wizard

: Prevent all damage that would be dealt to Stonewise Fortifier by target creature this turn.

Ephara taught some mortals to feel every vein in marble as though it flows with their own blood.

Stormchaser Chimera

Creature - Chimera

Flying

: Scry 1, then reveal the top card of your library. Stormchaser Chimera gets +X/+0 until end of turn, where X is that card's converted mana cost. (To scry 1, look at the top card of your library, then you may put that card on the bottom of your library.)

Strength from the Fallen

Enchantment

Constellation - Whenever Strength from the Fallen or another enchantment enters the battlefield under your control, target creature gets +X/+X until end of turn, where X is the number of creature cards in your graveyard.

Supply-Line Cranes

Creature - Bird

Flying

When Supply-Line Cranes enters the battlefield, put a +1/+1 counter on target creature.

They are trained from hatching to deliver aid where it is needed most.

Swarmborn Giant

Creature - Giant

When you're dealt combat damage, sacrifice Swarmborn Giant.

: Monstrosity 2. (If this creature isn't monstrous, put two +1/+1 counters on it and it becomes monstrous.)

As long as Swarmborn Giant is monstrous, it has reach.

Temple of Epiphany

Land

Temple of Epiphany enters the battlefield tapped.

When Temple of Epiphany enters the battlefield, scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

: Add or to your mana pool.

Temple of Malady

Land

Temple of Malady enters the battlefield tapped.

When Temple of Malady enters the battlefield, scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

: Add or to your mana pool.

Tethmos High Priest

Creature - Cat Cleric

Heroic - Whenever you cast a spell that targets Tethmos High Priest, return target creature card with converted mana cost 2 or less from your graveyard to the battlefield.

"Death is tyranny. Like all tyranny, it must be opposed."

Thassa's Devourer

Enchantment Creature - Elemental

Constellation - Whenever Thassa's Devourer or another enchantment enters the battlefield under your control, target player puts the top two cards of his or her library into his or her graveyard.

When mortals claim there are places Thassa cannot reach, the sea god laughs.

Thassa's Ire

Enchantment

: You may tap or untap target creature.

The sailor had never seen a god before. Now she had gazed upon Thassa. Shortly she would see Athreos, and then she would meet Erebos.

Thoughtrender Lamia

Enchantment Creature - Lamia

Constellation - Whenever Thoughtrender Lamia or another enchantment enters the battlefield under your control, each opponent discards a card.

Some predators can sense fear in their prey, but the lamia is drawn to madness.

Tormented Thoughts

Sorcery

As an additional cost to cast Tormented Thoughts, sacrifice a creature.

Target player discards a number of cards equal to the sacrificed creature's power.

"Not all nightmares can be escaped by waking."
-Ashiok, Nightmare Weaver

Triton Cavalry

Creature - Merfolk Soldier

Heroic - Whenever you cast a spell that targets Triton Cavalry, you may return target enchantment to its owner's hand.

The tritons broke the surface, and the Nyxborn broke ranks.

Triton Shorestalker

Creature - Merfolk Rogue

Triton Shorestalker can't be blocked.

"Who will miss you, drywalker? A wife? A child? Perhaps they will blame the sea for your fate, and teach future generations to stay far away from it."

Twinflame

Sorcery

Strive - Twinflame costs more to cast for each target beyond the first.

Choose any number of target creatures you control. For each of them, put a token that's a copy of that creature onto the battlefield. Those tokens have haste. Exile them at the beginning of the next end step.