Magecraft — Whenever you cast or copy an instant or sorcery spell, put a book counter on Spell Satchel.

, Remove a book counter from Spell Satchel: Add .

, , Remove three book counters from Spell Satchel: Draw a card.

Counter target spell with mana value 2.

Counter target spell.

Fateful hour — If you have 5 or less life, draw a card.

Counter target spell, then assemble a Contraption. (Put the top card of your Contraption deck face up onto one of your sprockets.)

Counter target spell unless its controller pays for each blue permanent you control.

Imprint — When Spellbinder enters the battlefield, you may exile an instant card from your hand.

Whenever equipped creature deals combat damage to a player, you may copy the exiled card. If you do, you may cast the copy without paying its mana cost.

Equip

You have no maximum hand size.

Flying

Whenever Spellbound Dragon attacks, draw a card, then discard a card. Spellbound Dragon gets +X/+0 until end of turn, where X is the discarded card's mana value.

When Spelldrain Assassin enters the battlefield, choose an instant or sorcery card in your hand. It perpetually gains casualty 2. (As you cast this spell, you may sacrifice a creature with power 2 or greater. When you do, copy this spell and you may choose a new target for the copy.)

When Spellgorger Barbarian enters the battlefield, discard a card at random.

When Spellgorger Barbarian leaves the battlefield, draw a card.

Flying, trample

Spellheart Chimera's power is equal to the number of instant and sorcery cards in your graveyard.

Counter target spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard. You may play it without paying its mana cost for as long as it remains exiled. (If it has X in its mana cost, X is 0.)

Return target creature card from your graveyard to your hand.

Spellmorph (You may cast this card face down as a 2/2 creature for . Cast it any time for its spellmorph cost.)

Whenever you cast an instant or sorcery spell, Spellrune Howler gets +2/+2 until end of turn.

Nightbound (If a player casts at least two spells during their own turn, it becomes day next turn.)

Flying

When Spellscorn Coven enters the battlefield, each opponent discards a card.

Counter target instant or sorcery spell. Its controller reveals cards from the top of their library until they reveal an instant or sorcery card. That player may cast that card without paying its mana cost. Then the player shuffles.

: Change a target of target spell or ability to Spellskite. ( can be paid with either or 2 life.)

Whenever an opponent casts a spell, that player sacrifices a permanent unless they pay .

Assist (Another player can pay up to of this spell's cost.)

When Spellweaver Duo enters the battlefield, you may return target tapped creature to its owner's hand.

Imprint — When Spellweaver Helix enters the battlefield, you may exile two target sorcery cards from a single graveyard.

Whenever a player casts a card, if it has the same name as one of the cards exiled with Spellweaver Helix, you may copy the other. If you do, you may cast the copy without paying its mana cost.

Spells that target Spellwild Ouphe cost less to cast.

Sphere of Annihilation enters the battlefield with X void counters on it.

At the beginning of your upkeep, exile Sphere of Annihilation, all creatures and planeswalkers with mana value less than or equal to the number of void counters on it, and all creature and planeswalker cards in graveyards with mana value less than or equal to the number of void counters on it.

If a black source would deal damage to you, prevent 2 of that damage.

If an artifact would deal damage to you, prevent 1 of that damage.

Spells cost more to cast.

Sphere of the Suns enters the battlefield tapped and with three charge counters on it.

, Remove a charge counter from Sphere of the Suns: Add one mana of any color.

Flying

Whenever Sphinx Ambassador deals combat damage to a player, search that player's library for a card, then that player chooses a card name. If you searched for a creature card that doesn't have that name, you may put it onto the battlefield under your control. Then that player shuffles.

Flying, ward

Domain — Whenever Sphinx of Clear Skies deals combat damage to a player, reveal the top X cards of your library, where X is the number of basic land types among lands you control. An opponent separates those cards into two piles. Put one pile into your hand and the other into your graveyard. (Piles can be empty.)

You may reveal this card from your opening hand. If you do, scry 3 at the beginning of your first upkeep.

Flying

At the beginning of your upkeep, scry 1.

Kicker (You may pay an additional as you cast this spell.)

Flying

When Sphinx of Lost Truths enters the battlefield, draw three cards. Then if it wasn't kicked, discard three cards.

Flying, vigilance

Spells your opponents cast that target Sphinx of New Prahv cost more to cast.

This spell can't be countered.

Flying, hexproof

Instant and sorcery spells you control can't be countered.

Flying

At the beginning of your postcombat main phase, there is an additional beginning phase after this phase. (The beginning phase includes the untap, upkeep, and draw steps.)

Flying

When Sphinx of Uthuun enters the battlefield, reveal the top five cards of your library. An opponent separates those cards into two piles. Put one pile into your hand and the other into your graveyard.

Flying

When Sphinx Summoner enters the battlefield, you may search your library for an artifact creature card, reveal it, put it into your hand. then shuffle.

Each opponent can't cast instant or sorcery spells during that player's next turn.

, , Sacrifice a white creature, a blue creature, and a black creature: Search your library for a card named Sphinx Sovereign, put it onto the battlefield, then shuffle.

You gain X life and draw X cards.

You may cast Spider Climb as though it had flash. If you cast it any time a sorcery couldn't have been cast, the controller of the permanent it becomes sacrifices it at the beginning of the next cleanup step.

Enchant creature

Enchanted creature gets +0/+3 and has reach. (It can block creatures with flying.)

Create a 1/2 green Spider creature token with reach for each creature card in your graveyard.

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

Creatures you control get +0/+1 and have reach. (They can block creatures with flying.)

When Spiderwig Boggart enters the battlefield, target creature gains fear until end of turn. (It can't be blocked except by artifact creatures and/or black creatures.)

Spike Breeder enters the battlefield with three +1/+1 counters on it.

, Remove a +1/+1 counter from Spike Breeder: Put a +1/+1 counter on target creature.

, Remove a +1/+1 counter from Spike Breeder: Create a 1/1 green Spike creature token.

Spike Colony enters the battlefield with four +1/+1 counters on it.

, Remove a +1/+1 counter from Spike Colony: Put a +1/+1 counter on target creature.

Spike Feeder enters the battlefield with two +1/+1 counters on it.

, Remove a +1/+1 counter from Spike Feeder: Put a +1/+1 counter on target creature.

Remove a +1/+1 counter from Spike Feeder: You gain 2 life.

Haste

Spike Soldier enters the battlefield with three +1/+1 counters on it.

, Remove a +1/+1 counter from Spike Soldier: Put a +1/+1 counter on target creature.

Remove a +1/+1 counter from Spike Soldier: Spike Soldier gets +2/+2 until end of turn.

Spike Weaver enters the battlefield with three +1/+1 counters on it.

, Remove a +1/+1 counter from Spike Weaver: Put a +1/+1 counter on target creature.

, Remove a +1/+1 counter from Spike Weaver: Prevent all combat damage that would be dealt this turn.

( can be paid with either or 2 life.)

: Reveal a card you own from outside the game that has been banned or restricted in a Constructed format and put it into your hand.

Flash

, , Sacrifice Spiked Pit Trap: Choose target creature, then roll a d20.

1–9 | Spiked Pit Trap deals 5 damage to that creature.

10–20 | Spiked Pit Trap deals 5 damage to that creature. Create a Treasure token.