When Steamflogger of the Month enters, it assembles a Contraption for each Contraption you control. (To assemble a Contraption, put the top card of your Contraption deck face up onto one of your sprockets.)

, : Steamflogger Temp assembles a Contraption. (Put the top card of your Contraption deck face up onto one of your sprockets.)

:

Augment (, Reveal this card from your hand: Combine it with target host. Augment only as a sorcery.)

Trample

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

Flying

: This creature gets +1/+0 until end of turn.

: Destroy each nonland permanent with mana value X whose controller was dealt combat damage by this creature this turn. Activate only once each turn.

First strike

When Steel Leaf Paladin enters, return a green or white creature you control to its owner's hand.

Flying

At the beginning of combat on your turn, target creature you control gains your choice of flying, vigilance, or lifelink until end of turn.

//PRT-Prototype_Mech//

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

3/3

Defender (This creature can't attack.)

Offspring (You may pay an additional as you cast this spell. If you do, when this creature enters, create a 1/1 token copy of it.)

Vigilance

Whenever an opponent casts a noncreature spell, put a +1/+1 counter on this creature.

Defender

Whenever an enchantment you control enters, Steelclad Spirit can attack this turn as though it didn't have defender.

Sliver creatures you control get +0/+1.

Flying

Whenever Steel-Plume Marshal attacks, other attacking creatures you control with flying get +2/+2 until end of turn.

: Steeple Creeper gains flying until end of turn.

Whenever you cast your second spell each turn, exile the top card of your library. Until the end of your next turn, you may play that card.

: Copy target instant or sorcery spell you control. You may choose new targets for the copy. Activate only if you've cast three or more spells this turn.

As Stenn, Paranoid Partisan enters, choose a card type other than creature or land.

Spells you cast of the chosen type cost less to cast.

: Exile Stenn. Return it to the battlefield under its owner's control at the beginning of the next end step.

Flying, vigilance

: Target creature with a +1/+1 counter on it gains flying and vigilance until end of turn.

When Sterling Hound enters, surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

Flying

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

: Each player loses 1 life for each Swamp they control.

Soulbond (You may pair this creature with another unpaired creature when either enters. They remain paired for as long as you control both of them.)

As long as Stern Mentor is paired with another creature, each of those creatures has ": Target player mills two cards."

Flying

Whenever Stet, Draconic Proofreader attacks, you may exile a card from your graveyard. When you do, Stet, Draconic Proofreader deals 4 damage to any target whose name begins with the same letter as the exiled card.

: Delete the first letter of target permanent or player's name until end of turn.

Vigilance

: Add .

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

Whenever Stigma Lasher deals damage to a player, that player can't gain life for the rest of the game.

Reach

When Stiltstrider enters, you get , then you may put a sticker on a nonland permanent you own.

Flying, trample

Stingerback Terror gets -1/-1 for each card in your hand.

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 (This creature can't attack.)

, : Stinging Barrier deals 1 damage to any target.

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

When Stinging Hivemaster dies, create a 1/1 colorless Phyrexian Mite artifact creature token with toxic 1 and "This creature can't block."

Whenever you cast your first spell during each opponent's turn, you may tap or untap target nonland permanent.

Stingmoggie enters with two +1/+1 counters on it.

, Remove a +1/+1 counter from Stingmoggie: Destroy target artifact or land.

Prowl (You may cast this for its prowl cost if you dealt combat damage to a player this turn with a Goblin or Rogue.)

Whenever a Rogue you control attacks and isn't blocked, it gets +2/+1 until end of turn.

Flying

Whenever Stinkweed Imp deals combat damage to a creature, destroy that creature.

Dredge 5 (If you would draw a card, you may mill five cards instead. If you do, return this card from your graveyard to your hand.)

Defender

When Stirring Bard enters, you take the initiative.

Mantle of Inspiration — : Target creature gains menace and haste until end of turn.

As an additional cost to cast this spell, exile a creature card from your graveyard.

Flying

, : Each player mills three cards. Exile up to two creature cards put into graveyards this way. Create an X/X blue Zombie creature token, where X is the total power of the cards exiled this way.

When Stitcher's Supplier enters or dies, mill three cards. (Put the top three cards of your library into your graveyard.)

When Stockpiling Celebrant enters, you may return another target nonland permanent you control to its owner's hand. If you do, scry 2.

When Stoic Builder enters, you may return target land card from your graveyard to your hand.

Defender (This creature can't attack.)

Flying

When Stoic Ephemera blocks, sacrifice it at end of combat.

Flash

Flying

Stoic Sphinx has hexproof as long as you haven't cast a spell this turn.

Distribute three +1/+1 counters among any number of target creatures you control.

Trample

Flying

When Stone Drake enters the battlefield, choose one —

• Distract — Tap target land. Draw a card.

• Enthrall — Target player discards a card for each spell you've cast this turn.

Equipped creatures you control get +1/+1.

Whenever an equipped creature you control dies, draw a card.

: Stone Kavu gets +1/+0 until end of turn.

: Stone Kavu gets +0/+1 until end of turn.

Stone Spirit can't be blocked by creatures with flying.

Whenever one or more cards leave your graveyard, scry 1.

Flash

Flying

When Stonecloaker enters, return a creature you control to its owner's hand.

When Stonecloaker enters, exile target card from a graveyard.

Whenever Stone-Cold Basilisk blocks or becomes blocked by a creature with fewer letters in its name, destroy that creature at end of combat. (Punctuation and spaces aren't letters.)

Whenever an opponent reads Stone-Cold Basilisk, that player is turned to stone until end of turn. Stoned players can't attack, block, cast spells, or activate abilities.

Cohort — , Tap an untapped Ally you control: Look at the top four cards of your library. You may reveal an Equipment card from among them and put it into your hand. Put the rest on the bottom of your library in any order.