Steam Frigate can't attack unless defending player controls an Island.

(: Add or .)

As Steam Vents enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

, : Exile target card from a graveyard.

, Sacrifice Steamclaw: Exile target card from a graveyard.

When Steamcore Weird enters the battlefield, if was spent to cast it, it deals 2 damage to any target.

When Steamflogger of the Month enters the battlefield, 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 the battlefield with two +1/+1 counters on it unless two or more colors of mana were spent to cast it.

Flying

: Steel Hellkite gets +1/+0 until end of turn.

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

First strike

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

: Put a +1/+1 counter on each artifact creature you control.

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.)

Steelclad Serpent can't attack unless you control another artifact.

Equipped creature gets +2/+2.

Equip Knight

Equip

Sliver creatures you control get +0/+1.

Creatures you control get +1/+1 until end of turn.

Forecast — , Reveal Steeling Stance from your hand: Target creature gets +1/+1 until end of turn. (Activate only during your upkeep and only once each turn.)

, , Return Steelshaper Apprentice to its owner's hand: Search your library for an Equipment card, reveal that card, put it into your hand, then shuffle.

As Steely Resolve enters the battlefield, choose a creature type.

Creatures of the chosen type have shroud. (They can't be the targets of spells or abilities.)

Flying, first strike

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.

Destroy all Plains. For each land destroyed this way, Stench of Evil deals 1 damage to that land's controller unless they pay .

As Stenn, Paranoid Partisan enters the battlefield, 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.

: Add .

, : Stensia Bloodhall deals 2 damage to target player or planeswalker.

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.)

Each player may shuffle their hand and graveyard into their library. Each player who does draws seven cards. Exile Step Between Worlds.

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.)

Return two target creatures to their owners' hands.

Wizardcycling (, Discard this card: Search your library for a Wizard card, reveal it, put it into your hand, then shuffle.)

Landfall — Whenever a land enters the battlefield under your control, Steppe Lynx gets +2/+2 until end of turn.

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

Return target creature or enchantment an opponent controls to its owner's hand.

Draw two cards, then discard a card. Create a tapped Powerstone token. (It's an artifact with ": Add . This mana can't be spent to cast a nonartifact spell.")

Soulbond (You may pair this creature with another unpaired creature when either enters the battlefield. 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."

Counter target creature spell with power or toughness 2 or less.

Target creature you control deals damage equal to its power to target creature you don't control. Create a Food token. (It's an artifact with ", , Sacrifice this artifact: You gain 3 life.")

Vigilance

: Add .

Enchant creature

Enchanted creature has menace and "Whenever this creature deals combat damage to a player, create a Treasure token." (It can't be blocked except by two or more creatures. The token is an artifact with ", Sacrifice this artifact: Add one mana of any color.")

When enchanted creature dies, draw a card.

Counter target activated or triggered ability. (Mana abilities can't be targeted.)

: Still Life becomes a 4/3 Centaur creature in addition to its other types until end of turn.

Reach

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

Equipped creature gets +1/+1 and has haste.

At the beginning of each combat, untap equipped creature.

Equipped creature has first strike as long as it's blocking or blocked by a Goblin or Orc.

Equip

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.

Put three -1/-1 counters on target creature with flying.

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

Stingmoggie enters the battlefield 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.)

Choose one —

• Creatures you control get +2/+2 until end of turn.

• Until end of turn, creatures you control gain "Whenever this creature deals damage, you gain that much life."

Entwine (Choose both if you pay the entwine cost.)