Whenever Steadfast Cathar attacks, it gets +0/+2 until end of turn.

Lifelink

Vigilance (Attacking doesn't cause this creature to tap.)

When Steadfast Sentry dies, put a +1/+1 counter on target creature you control.

Creatures you control get +0/+3 until end of turn.

Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Draw a card.

Enchant artifact

You control enchanted artifact.

Target creature gets +1/+1 until end of turn. Another target creature gets -1/-1 until end of turn.

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

Steam Blast deals 2 damage to each creature and each player.

Return target nonland permanent to its owner's hand. (Then exile this card. You may cast the creature later from exile.)

Reach (This creature can block creatures with flying.)

: Steam Spitter gets +1/+0 until end of turn.

Enchant land

When enchanted land becomes tapped, destroy it and Steam Vines deals 1 damage to that land's controller. That player attaches Steam Vines to a land of their choice.

Flying, vigilance

When Steamcore Scholar enters, draw two cards. Then discard two cards unless you discard an instant or sorcery card or a creature card with flying.

Other Riggers you control get +1/+0 and have haste.

If a Rigger you control would assemble a Contraption, it assembles two Contraptions instead.

Whenever another Goblin you control enters, you may pay . If you do, Steamflogger Service Rep assembles a Contraption. (Put the top card of your Contraption deck face up onto one of your sprockets.)

Roll a six-sided die. Assemble a number of Contraptions equal to the result. (To assemble a Contraption, put the top card of your Contraption deck face up onto one of your sprockets.)

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.)

When this creature dies, it deals 1 damage to target player.

Steel Dromedary enters tapped with two +1/+1 counters on it.

Steel Dromedary doesn't untap during your untap step if it has a +1/+1 counter on it.

At the beginning of combat on your turn, you may move a +1/+1 counter from Steel Dromedary onto target creature.

Steel Leaf Champion can't be blocked by creatures with power 2 or less.

Enchant creature

As long as enchanted creature is white, it gets +1/+1 and has lifelink. (Damage dealt by the creature also causes its controller to gain that much life.)

As long as enchanted creature is blue, it gets +1/+1 and can't be blocked.

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

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

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

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

Equipped creature gets +2/+2.

Equip Knight

Equip

Flying

Whenever you draw your second card each turn, Steelgaze Griffin gets +2/+0 until end of turn.

Flying

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

Search your library for an Equipment card, reveal that card, put it into your hand, then shuffle.

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.

: 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.)

, Discard a card: Tap target creature.

: Target creature gets +2/+2 until end of turn. Activate only during your turn, before attackers are declared.

, Exert Steward of Solidarity: Create a 1/1 white Warrior creature token with vigilance. (An exerted creature won't untap during your next untap step.)

2 — When this permanent dies, you may return target creature to its owner's hand.

4 — Whenever this creature attacks, creatures you control get +1/+1 until end of turn.

2 — 3/3

3 — 2/6

Protection from white and from black

: Stillmoon Cavalier gains flying until end of turn.

: Stillmoon Cavalier gains first strike until end of turn.

: Stillmoon Cavalier gets +1/+0 until end of turn.

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.)

Deathtouch

Descend 4 — Whenever Stinging Cave Crawler attacks, if there are four or more permanent cards in your graveyard, you draw a card and you lose 1 life.

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.

Return target creature card with mana value X or less from your graveyard to the battlefield.

Target creature you control gets +2/+2 until end of turn.

Overload (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

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

When Stitched Assistant exploits a creature, scry 1, then draw a card. (To scry 1, look at the top card of your library, then you may put that card on the bottom.)

Stitched Mangler enters tapped.

When Stitched Mangler enters, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step.

, : Create a 2/2 blue Homunculus creature token, then sacrifice a creature.

Flying

, Discard two cards: Return Stitchwing Skaab from your graveyard to the battlefield tapped.

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

Whenever a player cycles a card, Stoic Champion gets +2/+2 until end of turn.

When Stoic Farmer enters, search your library for a basic Plains card and reveal it. If an opponent controls more lands than you, put it onto the battlefield tapped. Otherwise, put it into your hand. Then shuffle.

Foretell (During your turn, you may pay and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)

Discard your hand, then draw two cards. (Then exile this card. You may cast the creature later from exile.)