Shrewd Hatchling enters the battlefield with four -1/-1 counters on it.

: Target creature can't block Shrewd Hatchling this turn.

Whenever you cast a blue spell, remove a -1/-1 counter from Shrewd Hatchling.

Whenever you cast a red spell, remove a -1/-1 counter from Shrewd Hatchling.

Target creature gains fear until end of turn. (It can't be blocked except by artifact creatures and/or black creatures.)

Flying

: Shriekdiver gains haste until end of turn.

Shriekhorn enters the battlefield with three charge counters on it.

, Remove a charge counter from Shriekhorn: Target player mills two cards.

Flying

When Shrieking Drake enters the battlefield, return a creature you control to its owner's hand.

Haste

When Shrieking Mogg enters the battlefield, tap all other creatures.

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)

When Shriekmaw enters the battlefield, destroy target nonartifact, nonblack creature.

Evoke (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters the battlefield.)

Creatures with power less than Shrill Howler's power can't block it.

: Transform Shrill Howler.

At the beginning of your upkeep and whenever you cast a green spell, put a charge counter on Shrine of Boundless Growth.

, Sacrifice Shrine of Boundless Growth: Add for each charge counter on Shrine of Boundless Growth.

At the beginning of your upkeep and whenever you cast a black spell, put a charge counter on Shrine of Limitless Power.

, , Sacrifice Shrine of Limitless Power: Target player discards a card for each charge counter on Shrine of Limitless Power.

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 Shrine Steward enters the battlefield, you may search your library for an Aura or Shrine card, reveal it, put it into your hand, then shuffle.

All creatures get -1/-1 until end of turn.

Horsemanship (This creature can't be blocked except by creatures with horsemanship.)

When Shu Soldier-Farmers enters the battlefield, you gain 4 life.

Equipped creature has ", Unattach Shuriken: Shuriken deals 2 damage to target creature. That creature's controller gains control of Shuriken unless it was unattached from a Ninja."

Equip (: Attach to target creature you control. Equip only as a sorcery.)

Flying

Whenever Sibilant Spirit attacks, defending player may draw a card.

When Sibsig Host enters the battlefield, each player mills three cards.

Delve (Each card you exile from your graveyard while casting this spell pays for .)

When Sibsig Muckdraggers enters the battlefield, return target creature card from your graveyard to your hand.

Flash

Squad (As an additional cost to cast this spell, you may pay any number of times. When this creature enters the battlefield, create that many tokens that are copies of it.)

Benediction of the Omnissiah — When Sicarian Infiltrator enters the battlefield, draw a card.

Enchant creature

Enchanted creature gets -1/-1.

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

You may exile a black card with mana value X from your hand rather than pay this spell's mana cost.

Target creature gets -X/-X until end of turn.

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

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.

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

Creatures your opponents control without flying or reach can't block creatures with power 2 or less.

Partner (You can have two commanders if both have partner.)

You and target opponent arm-wrestle. If you win, create a 3/3 green Ape creature token.

As long as you control a Desert or there is a Desert card in your graveyard, Sidewinder Naga gets +1/+0 and has trample.

Whenever Sidisi, Brood Tyrant enters the battlefield or attacks, mill three cards.

Whenever one or more creature cards are put into your graveyard from your library, create a 2/2 black Zombie creature token.

Exploit (When this creature enters the battlefield, you may sacrifice a creature.)

When Sidisi's Faithful exploits a creature, return target creature to its owner's hand.

Hexproof

As long as Siege Behemoth is attacking, for each creature you control, you may have that creature assign its combat damage as though it weren't blocked.

Trample

Untapped creatures can't block.

Tapped creatures can block.

Enchant creature or Vehicle

As long as enchanted permanent is a Vehicle, it's a creature in addition to its other types.

Enchanted creature gets +3/+0 and has first strike.

Trample

When Siege Rhino enters the battlefield, each opponent loses 3 life and you gain 3 life.

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

Whenever Siege Striker attacks, you may tap any number of untapped creatures you control. Siege Striker gets +1/+1 until end of turn for each creature tapped this way.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)

Trample

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)

: Target creature can't block this turn.

When Siege-Gang Commander enters the battlefield, create three 1/1 red Goblin creature tokens.

, Sacrifice a Goblin: Siege-Gang Commander deals 2 damage to any target.

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

Draw three cards, then discard a card.

Devoid (This card has no color.)

Whenever another nontoken creature you control dies, create a 1/1 colorless Eldrazi Scion creature token. It has "Sacrifice this creature: Add ." ( represents colorless mana.)

Flying, trample

Humans you control get +1/+1.

Coven — Whenever Sigarda attacks, if you control three or more creatures with different powers, look at the top five cards of your library. You may reveal a Human creature card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

Flying

You and Humans you control have hexproof.

, Exile a card from your graveyard: Create a 1/1 white Human Soldier creature token.

You may cast Aura and Equipment spells as though they had flash.

Whenever an Equipment enters the battlefield under your control, you may attach it to target creature you control.

As Sigarda's Splendor enters the battlefield, note your life total.

At the beginning of your upkeep, draw a card if your life total is greater than or equal to the last noted life total for Sigarda's Splendor. Then note your life total.

Whenever you cast a white spell, you gain 1 life.

Flash

Flying

Whenever Sigarda's Vanguard enters the battlefield or attacks, choose any number of creatures with different powers. Those creatures gain double strike until end of turn.

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.

Flying

When Sigardian Savior enters the battlefield, if you cast it, return up to two target creature cards with mana value 2 or less from your graveyard to the battlefield.

Look at the top two cards of your library. Put one of them into your hand and the other on the bottom of your library.

Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.)

: Sighted-Caste Sorcerer gains shroud until end of turn. (It can't be the target of spells or abilities.)