Spike Hatcher enters with six +1/+1 counters on it.

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

, Remove a +1/+1 counter from Spike Hatcher: Regenerate Spike Hatcher.

Spike Soldier enters 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 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.

When Spinal Centipede dies, put a +1/+1 counter on target creature you control.

Whenever Spincrusher blocks, put a +1/+1 counter on it.

Remove a +1/+1 counter from Spincrusher: Spincrusher can't be blocked this turn.

Whenever Spiritmonger deals damage to a creature, put a +1/+1 counter on Spiritmonger.

: Regenerate Spiritmonger.

: Spiritmonger becomes the color of your choice until end of turn.

Spitting Hydra enters with four +1/+1 counters on it.

, Remove a +1/+1 counter from Spitting Hydra: It deals 1 damage to target creature.

: Monstrosity 3. (If this creature isn't monstrous, put three +1/+1 counters on it and it becomes monstrous.)

When Splitting Slime becomes monstrous, create a token that's a copy of Splitting Slime. (The token has no counters and isn't monstrous.)

Graft 2 (This creature enters with two +1/+1 counters on it. Whenever another creature enters, you may move a +1/+1 counter from this creature onto it.)

: Regenerate target creature with a +1/+1 counter on it.

Springmantle Cleric enters with a +1/+1 counter on it for each color of mana spent to cast it.

Spymaster's Vault enters tapped unless you control a Swamp.

: Add .

, : Target creature you control connives X, where X is the number of creatures that died this turn. (Draw X cards, then discard X cards. Put a +1/+1 counter on that creature for each nonland card discarded this way.)

Whenever a creature you control deals combat damage to a player, turn that creature face up or put a +1/+1 counter on it.

(You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)

Menace

At the beginning of your end step, if you descended this turn, put a +1/+1 counter on Stalactite Stalker. (You descended if a permanent card was put into your graveyard from anywhere.)

, Sacrifice Stalactite Stalker: Target creature gets -X/-X until end of turn, where X is Stalactite Stalker's power.

When Stalwarts of Osgiliath enters, the Ring tempts you.

Whenever you draw your second card each turn, put a +1/+1 counter on Stalwarts of Osgiliath.

Star Pupil enters with a +1/+1 counter on it.

When Star Pupil dies, put its counters on target creature you control.

Heroic — Whenever you cast a spell that targets Staunch-Hearted Warrior, put two +1/+1 counters on Staunch-Hearted Warrior.

Put two +1/+1 counters on target creature you control. That creature can't be blocked this turn.

Trample

Steel Exemplar enters with two +1/+1 counters on it unless two or more colors of mana were spent to cast it.

Steelbane Hydra enters with X +1/+1 counters on it.

, Remove a +1/+1 counter from Steelbane Hydra: Destroy target artifact or enchantment.

Attacking creatures you control have first strike.

Whenever a Vampire you control deals combat damage to a player, put a +1/+1 counter on it.

Madness (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Flying

When Sterling Supplier enters, put a +1/+1 counter on another target creature you control.

Whenever you put one or more +1/+1 counters on a creature you control, put a supply counter on Stocking the Pantry.

, Remove a supply counter from Stocking the Pantry: Draw a card.

Whenever one or more cards are put into exile during your turn, put a +1/+1 counter on Stonebinder's Familiar. This ability triggers only once each turn.

: Monstrosity 3. (If this creature isn't monstrous, put three +1/+1 counters on it and it becomes monstrous.)

When Stoneshock Giant becomes monstrous, creatures without flying your opponents control can't block this turn.

Haste

Storm Entity enters with a +1/+1 counter on it for each other spell cast this turn.

Distribute four +1/+1 counters among up to four target creatures you control. Creatures you control gain vigilance and trample until end of turn.

Flying

Stormbound Geist can block only creatures with flying.

Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)

, Sacrifice another creature or artifact: Put a +1/+1 counter on Stormclaw Rager and draw a card. Activate only as a sorcery.

Whenever you cast a spell with mana value 5 or greater, put two +1/+1 counters on Stormkeld Prowler.

Flying, first strike

Megamorph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its megamorph cost and put a +1/+1 counter on it.)

When Stormwing Dragon is turned face up, put a +1/+1 counter on each other Dragon creature you control.

Haste

Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)

Vigilance, trample

Grenades — , , Sacrifice an artifact: Choose a player at random. When you do, Strax fights another target creature that player controls.

Glory of Battle — Whenever Strax deals damage to a creature, put a +1/+1 counter on Strax.

: Add one mana of any color.

, : Put X +1/+1 counters on target creature, where X is the number of Bobbleheads you control. Activate only as a sorcery.

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

Target creature you control gets +2/+2 until end of turn. If this spell was kicked, put a +1/+1 counter on each creature you control.

Multikicker (You may pay an additional any number of times as you cast this spell.)

Choose target creature, then choose another target creature for each time this spell was kicked. Put X +1/+1 counters on each of them.

When Stromkirk Mentor enters, put a +1/+1 counter on another target Vampire you control.

Whenever Stromkirk Patrol deals combat damage to a player, put a +1/+1 counter on it.

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

Menace (This creature can't be blocked except by two or more creatures.)

If Stronghold Confessor was kicked, it enters with two +1/+1 counters on it.

When Stumpsquall Hydra enters, distribute X +1/+1 counters among it and any number of commanders.

Choose one or both —

• Target creature gets -1/-1 until end of turn.

• Put a +1/+1 counter on target creature.

Amass Orcs X. Mill X cards. You may cast an instant or sorcery spell with mana value X or less from among them without paying its mana cost. (To amass Orcs X, put X +1/+1 counters on an Army you control. It's also an Orc. If you don't control an Army, create a 0/0 black Orc Army creature token first.)

Flashback—, Exile X cards from your graveyard.

Bolster X, where X is the number of cards in your hand. Each creature you control with a +1/+1 counter on it gains trample until end of turn. (To bolster X, choose a creature with the least toughness among creatures you control and put X +1/+1 counters on it.)

Choose one —

• Destroy target nontoken artifact or enchantment an opponent controls. Incubate 2. (Create an Incubator token with two +1/+1 counters on it and ": Transform this artifact." It transforms into a 0/0 Phyrexian artifact creature.)

• Incubate 2, then transform an Incubator token you control.

First strike

Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)

Vigilance

When Sunrise Seeker enters, it explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on this creature, then put the card back or put it into your graveyard.)

When Sunshower Druid enters, put a +1/+1 counter on target creature and you gain 1 life.

When Supply Runners enters, put a +1/+1 counter on each other creature you control.

When you unlock this door, return target creature card with mana value 3 or less from your graveyard to the battlefield.

(You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)

Trample

Other creatures you control have trample.

Whenever another nontoken creature you control enters, put a +1/+1 counter on it. It gains haste until end of turn.

Raid — Swaggering Corsair enters with a +1/+1 counter on it if you attacked this turn.