Flying, vigilance

When Shepherd of the Clouds enters the battlefield, return target permanent card with mana value 3 or less from your graveyard to your hand. Return that card to the battlefield instead if you control a Mount.

Sheriff of Safe Passage enters the battlefield with a +1/+1 counter on it plus an additional +1/+1 counter on it for each other creature you control.

Plot (You may pay and exile this card from your hand. Cast it as a sorcery on a later turn without paying its mana cost. Plot only as a sorcery.)

Defender

Whenever Shield Sphere blocks, put a -0/-1 counter on it.

( can be paid with either or .)

Enchant creature

When Shielding Plax enters the battlefield, draw a card.

Enchanted creature can't be the target of spells or abilities your opponents control.

, Exile Shifty Doppelganger: You may put a creature card from your hand onto the battlefield. If you do, that creature gains haste until end of turn. At the beginning of the next end step, sacrifice that creature. If you do, return Shifty Doppelganger to the battlefield.

Look at the top four cards of your library. Put one of them into your hand and the rest on the bottom of your library in a random order.

: Add .

, : Target legendary creature gains first strike until end of turn.

: Monstrosity 4. (If this creature isn't monstrous, put four +1/+1 counters on it and it becomes monstrous.)

When Shipbreaker Kraken becomes monstrous, tap up to four target creatures. Those creatures don't untap during their controllers' untap steps for as long as you control Shipbreaker Kraken.

Raid — When Shipwreck Looter enters the battlefield, if you attacked this turn, you may draw a card. If you do, discard a card.

When Shipwreck Moray enters the battlefield, you get (four energy counters).

Pay : Shipwreck Moray gets +2/-2 until end of turn.

When Shipwreck Sifters enters the battlefield, draw a card, then discard a card.

Whenever you discard a Spirit card or a card with disturb, put a +1/+1 counter on Shipwreck Sifters.

At the beginning of your upkeep, sacrifice a Snake.

Whenever Shisato, Whispering Hunter deals combat damage to a player, that player skips their next untap step.

First strike, haste

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.)

Defender

Landfall — Whenever a land enters the battlefield under your control, Shoal Serpent loses defender until end of turn.

Target creature gets -2/-0 until end of turn.

Draw a card.

: Shore Snapper gains islandwalk until end of turn. (It can't be blocked as long as defending player controls an Island.)

Shower of Sparks deals 1 damage to target creature and 1 damage to target player or planeswalker.

Choose target creature you control. Turn it face up if it's face down. Then it deals damage equal to its power to each other creature.

When Shrapnel Slinger enters the battlefield, you may sacrifice a creature. When you do, destroy target artifact an opponent controls.

Flying

Whenever Shrieking Specter attacks, defending player discards a card.

At the beginning of your upkeep and whenever you cast a blue spell, put a charge counter on Shrine of Piercing Vision.

, Sacrifice Shrine of Piercing Vision: Look at the top X cards of your library, where X is the number of charge counters on Shrine of Piercing Vision. Put one of those cards into your hand and the rest on the bottom of your library in any order.

When Shrouded Shepherd enters the battlefield, target creature you control gets +2/+2 until end of turn.

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

Whenever you cast a noncreature spell, you may pay . If you do, target creature gains double strike until end of turn.

Wither (This deals damage to creatures in the form of -1/-1 counters.)

Lifelink (Damage dealt by this creature also causes you to gain that much life.)

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

Enrage — Whenever Siegehorn Ceratops is dealt damage, put two +1/+1 counters on it. (It must survive the damage to get the counters.)

Enchant creature

Enchanted creature can't attack or block.

: Exile enchanted creature. Create a Blood token. (It's an artifact with ", , Discard a card, Sacrifice this artifact: Draw a card.")

As long as you've put one or more +1/+1 counters on a creature this turn, Sigardian Paladin has trample and lifelink.

: Target creature you control with a +1/+1 counter on it gains trample and lifelink until end of turn.

Whenever a creature enters the battlefield under your control, if that creature is 1/1, put two +1/+1 counters on it.

Whenever you cast an enchantment spell, create a 4/4 white Angel creature token with flying.

Battle cry (Whenever this creature attacks, each other attacking creature gets +1/+0 until end of turn.)

Signal Pest can't be blocked except by creatures with flying or reach.

Vigilance

: Add one mana of any color.

Silburlind Snapper can't attack unless you've cast a noncreature spell this turn.

Flying

Whenever Silent Specter deals combat damage to a player, that player discards two cards.

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 Silkwrap enters the battlefield, exile target creature with mana value 3 or less an opponent controls until Silkwrap leaves the battlefield. (That creature returns under its owner's control.)

When Silver Deputy enters the battlefield, you may search your library for a basic land card or a Desert card, reveal it, then shuffle and put it on top.

: Target creature you control gets +1/+0 until end of turn. Activate only as a sorcery.

Trample

Whenever a Wolf or Werewolf you control becomes the target of an instant or sorcery spell, create a 2/2 green Wolf creature token.

, , Discard a card: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Magecraft — Whenever you cast or copy an instant or sorcery spell, target creature gets +1/+0 until end of turn.

Magecraft — Whenever you cast or copy an instant or sorcery spell, Silverquill Pledgemage gains your choice of flying or lifelink until end of turn.

Evolve (Whenever a creature enters the battlefield under your control, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)

, Remove one or more +1/+1 counters from Simic Manipulator: Gain control of target creature with power less than or equal to the number of +1/+1 counters removed this way.

Each player sacrifices an enchantment.

Enchant creature

Whenever enchanted creature attacks or blocks, its controller loses 2 life.

Until end of turn, you may cast target instant or sorcery card from your graveyard without paying its mana cost. If that spell would be put into your graveyard, exile it instead. Exile Sins of the Past.

When Siona, Captain of the Pyleas enters the battlefield, look at the top seven cards of your library. You may reveal an Aura card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

Whenever an Aura you control becomes attached to a creature you control, create a 1/1 white Human Soldier creature token.

Look at the top two cards of target opponent's library. Exile one of them face down and put the other on the bottom of that library. You may play the exiled card for as long as it remains exiled, and you may spend mana as though it were mana of any color to cast that spell.

Flashback

Medicus Ministorum — When Sister Hospitaller enters the battlefield, return target creature card from your graveyard to the battlefield. You gain life equal to its mana value.