Serrated Arrows enters with three arrowhead counters on it.

At the beginning of your upkeep, if there are no arrowhead counters on Serrated Arrows, sacrifice it.

, Remove an arrowhead counter from Serrated Arrows: Put a -1/-1 counter on target creature.

: Add .

Any time you could mulligan and Serum Powder is in your hand, you may exile all the cards from your hand, then draw that many cards. (You can do this in addition to taking mulligans.)

When Servo Schematic enters or is put into a graveyard from the battlefield, create a 1/1 colorless Servo artifact creature token.

Whenever a creature you control explores, put a +1/+1 counter on Shadowed Caravel.

Crew 2 (Tap any number of creatures you control with total power 2 or more: This Vehicle becomes an artifact creature until end of turn.)

Shambling Suit's power is equal to the number of artifacts and/or enchantments you control.

Equipped creature gets +1/+0.

Whenever equipped creature attacks, you may mill two cards.

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

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)

Flying

When Sharuum the Hegemon enters, you may return target artifact card from your graveyard to the battlefield.

: Target blue creature gains shroud until end of turn. (It can't be the target of spells or abilities.)

: Prevent the next 1 damage that would be dealt to you this turn.

If a source would deal damage to equipped creature, prevent 2 of that damage.

Equip

Defender

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

Defender (This creature can't attack.)

Shifting Wall enters with X +1/+1 counters on it.

Flash

When Shining Armor enters, attach it to target Knight you control.

Equipped creature gets +0/+2 and has vigilance.

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

, : Draw two cards, then discard a card. Create a 1/1 colorless Pilot creature token with "This creature crews Vehicles as though its power were 2 greater."

Crew 8 (Tap any number of creatures you control with total power 8 or more: This Vehicle becomes an artifact creature until end of turn.)

Shorikai, Genesis Engine can be your commander.

Equipped creature gets +1/+1.

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

Shriekhorn enters with three charge counters on it.

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

At the beginning of your upkeep and whenever you cast a red spell, put a charge counter on Shrine of Burning Rage.

, , Sacrifice Shrine of Burning Rage: It deals damage equal to the number of charge counters on it to any target.

At the beginning of your upkeep and whenever you cast a white spell, put a charge counter on Shrine of Loyal Legions.

, , Sacrifice Shrine of Loyal Legions: Create a 1/1 colorless Phyrexian Myr artifact creature token for each charge counter on Shrine of Loyal Legions.

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

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.)

Living weapon (When this Equipment enters, create a 0/0 black Phyrexian Germ creature token, then attach this to it.)

Equipped creature gets +2/+2.

Equip

Whenever equipped creature attacks alone, it gets +1/+1 until end of turn for each other creature you control.

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

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.

Deathtouch

Whenever Silas Renn, Seeker Adept deals combat damage to a player, choose target artifact card in your graveyard. You may cast that card this turn.

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

, , Sacrifice Silent Dart: It deals 3 damage to target creature.

Whenever Silent Submersible deals combat damage to a player or planeswalker, draw a card.

Crew 2 (Tap any number of creatures you control with total power 2 or more: This Vehicle becomes an artifact creature until end of turn.)

, , Sacrifice Silver Bolt: It deals 3 damage to target creature. If a Werewolf is dealt damage this way, destroy it.

: Add .

Flash

When Silver Shroud Costume enters, attach it to target creature you control. That creature gains shroud until end of turn. (It can't be the target of spells or abilities.)

Equipped creature can't be blocked.

Equip

Equipped creature gets +2/+0.

As long as equipped creature is a Human, it gets an additional +1/+0.

Equip

When Simian Simulacrum enters, put two +1/+1 counters on target creature you control.

Unearth (: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

: Add or .

, , Sacrifice Simic Cluestone: Draw a card.

: Add or .

, , Sacrifice Simic Locket: Draw two cards.

When Simulacrum Synthesizer enters, scry 2.

Whenever another artifact you control with mana value 3 or greater enters, create a 0/0 colorless Construct artifact creature token with "This creature gets +1/+1 for each artifact you control."

Equipped creature has ", : Tap target creature."

Equip

Equipped creature has skulk. (It can't be blocked by creatures with greater power.)

Whenever equipped creature deals combat damage to a player, you may draw a card. If you do, discard a card.

Equip

Play with the top card of your library revealed.

As long as the top card of your library is an artifact or creature card, Skill Borrower has all activated abilities of that card. (If any of the abilities use that card's name, use this creature's name instead.)

Trample, haste

When Skitterbeam Battalion enters, if you cast it, create two tokens that are copies of it.

//PRT-Prototype_Mech//

Prototype (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.)

2/2

Deathtouch

Hyperphase Threshers — Whenever an artifact you control enters, Skorpekh Destroyer gains first strike until end of turn.

Toxic 1 (Players dealt combat damage by this creature also get a poison counter.)

Skrelv, Defector Mite can't block.

, : Choose a color. Another target creature you control gains toxic 1 and hexproof from that color until end of turn. It can't be blocked by creatures of that color this turn. ( can be paid with either or 2 life.)

, : Return target enchantment card from your graveyard to your hand.

At the beginning of each opponent's upkeep, Skullcage deals 2 damage to that player unless they have exactly three or exactly four cards in hand.

: You gain 1 life.

, Discard a card: You gain 3 life.

Flying

Crew 1 (Tap any number of creatures you control with total power 1 or more: This Vehicle becomes an artifact creature until end of turn.)

When Skyclave Pick-Axe enters, attach it to target creature you control.

Landfall — Whenever a land you control enters, equipped creature gets +2/+2 until end of turn.

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

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

Flying, defender

If Skyclave Sentinel was kicked, it enters with two +1/+1 counters on it.

As long as Skyclave Sentinel has a +1/+1 counter on it, it can attack as though it didn't have defender.

, , Sacrifice Skycloud Egg: Add . Draw a card.

Flying

When Skyscanner enters, draw a card.

When Skyship Weatherlight enters, search your library for any number of artifact and/or creature cards, exile them, then shuffle.

, : Choose a card at random that was exiled with Skyship Weatherlight. Put that card into its owner's hand.