Flying

Whenever one or more other creatures die, put a +1/+1 counter on Sengir Connoisseur. This ability triggers only once each turn.

Flying

Whenever another creature dies, put two +1/+1 counters on Sengir, the Dark Baron.

Whenever another player loses the game, you gain life equal to that player's life total as the turn began.

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

Bushido 1 (Whenever this creature blocks or becomes blocked, it gets +1/+1 until end of turn.)

, : Put a training counter on target creature. That creature gains bushido 1 and becomes a Samurai in addition to its other creature types. Activate only as a sorcery.

When Sensor Splicer enters, create a 3/3 colorless Phyrexian Golem artifact creature token.

Golem creatures you control have vigilance.

When Sentinel of Lost Lore enters, choose one or more —

• Return target card you own in exile that has an Adventure to your hand.

• Put target card you don't own in exile that has an Adventure on the bottom of its owner's library.

• Exile target player's graveyard.

Vigilance

Whenever Sentinel of the Nameless City enters or attacks, create a Map token. (It's an artifact with ", , Sacrifice this artifact: Target creature you control explores. Activate only as a sorcery.")

Haste

As long as an artifact entered the battlefield under your control this turn, creatures you control get +2/+2.

Battalion — Whenever Sentinel Sarah Lyons and at least two other creatures attack, Sentinel Sarah Lyons deals damage equal to the number of artifacts you control to target player.

Whenever an instant or sorcery spell is cast during your turn, Sentinel Tower deals damage to any target equal to 1 plus the number of instant and sorcery spells cast before that spell this turn.

Flash

This spell costs less to cast for each creature attacking you.

When Sentry Bot enters, you get for each creature attacking you.

At the beginning of combat on your turn, you may pay . If you do, put a +1/+1 counter on each creature you control.

Flying, vigilance

, Pay 3 life: Regenerate Sentry of the Underworld.

When Separatist Voidmage enters, you may return target creature to its owner's hand.

Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.)

When Sepulchral Primordial enters, for each opponent, you may put up to one target creature card from that player's graveyard onto the battlefield under your control.

Flying

: Transform Seraph of New Capenna. Activate only as a sorcery. ( can be paid with either or 2 life.)

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)

Flying

Seraph of the Masses's power and toughness are each equal to the number of creatures you control.

Flying

Indestructible (Damage and effects that say "destroy" don't destroy this creature. If its toughness is 0 or less, it's still put into its owner's graveyard.)

Equipped creature gets +2/+2.

Whenever equipped creature attacks the player with the most life or tied for most life, create a 4/4 white Angel creature token with flying that's tapped and attacking that player.

Equip

Destroy target enchantment. You gain life equal to its mana value.

, : Create a 1/1 colorless Snake artifact creature token. It has "Whenever this creature deals damage to a player, that player gets a poison counter." (A player with ten or more poison counters loses the game.)

Krakens, Leviathans, Octopuses, and Serpents you control can't be blocked except by Krakens, Leviathans, Octopuses, and Serpents.

Whenever an Elf you control dies, exile it.

, Pay 2 life: Until end of turn, you may cast a creature spell from among cards exiled with Serpent's Soul-Jar.

Whenever Serra Inquisitors blocks or becomes blocked by one or more black creatures, Serra Inquisitors gets +2/+0 until end of turn.

+2: Creatures you control with flying get +1/+1 until end of turn.

−3: Create a 4/4 white Angel creature token with flying and vigilance.

−6: You get an emblem with "If you control a creature, damage that would reduce your life total to less than 1 reduces it to 1 instead."

Enchant creature

Enchanted creature gets +1/+2 as long as it's white. Otherwise, it gets -2/-1.

: Put a -1/-1 counter on Serrated Biskelion and 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 Serum Visionary enters, draw a card, then scry 2.

Flying

Whenever you cast a noncreature spell, put an oil counter on Serum-Core Chimera.

Remove three oil counters from Serum-Core Chimera: Draw a card. Then you may discard a nonland card. When you discard a card this way, Serum-Core Chimera deals 3 damage to target creature or planeswalker. Activate only as a sorcery.

When Servant of the Conduit enters, you get (two energy counters).

, Pay : Add one mana of any color.

Deathtouch

Whenever Servant of the Stinger deals combat damage to a player, if you've committed a crime this turn, you may sacrifice Servant of the Stinger. If you do, search your library for a card, put it into your hand, then shuffle. (Targeting opponents, anything they control, and/or cards in their graveyards is a crime.)

When Servant of Volrath leaves the battlefield, sacrifice a creature.

Create two 1/1 colorless Servo artifact creature tokens.

Other Snake creatures you control get +2/+2.

Whenever a Snake you control deals combat damage to a player, you may draw a card.

Constellation — Whenever an enchantment you control enters, put a +1/+1 counter on Setessan Champion and draw a card.

When Setessan Petitioner enters, you gain life equal to your devotion to green. (Each in the mana costs of permanents you control counts toward your devotion to green.)

Tap an untapped Druid you control: Add .

Reach (This creature can block creatures with flying.)

Threshold — Seton's Scout gets +2/+2 as long as seven or more cards are in your graveyard.

Exile target creature. Put two loyalty counters on a planeswalker you control.

Destroy target nonblack creature. It can't be regenerated. You gain life equal to its toughness.

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)

Return target permanent card with mana value 3 or less from your graveyard to the battlefield. If this spell was cast from a graveyard, you may copy this spell and may choose a new target for the copy.

Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Choose target creature. If it's attacking, it can't be blocked this turn. If it's blocking, prevent all combat damage that would be dealt this combat by it and each creature it's blocking.

: Shade of Trokair gets +1/+1 until end of turn.

Suspend 3— (Rather than cast this card from your hand, you may pay and exile it with three time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost. It has haste.)

Whenever another black creature you control enters, target creature gains intimidate until end of turn. (It can't be blocked except by artifact creatures and/or creatures that share a color with it.)

, : Put target creature you control on top of its owner's library.

, : Shadow Guildmage deals 1 damage to any target and 1 damage to you.

Flash

At the beginning of your upkeep, each player mills three cards. You may exile a creature card from among the cards milled this way. If you do, Shadow Kin becomes a copy of that card, except it has this ability.

( can be paid with either or .)

Players can't search libraries this turn.

Draw a card.

Exile all creature cards from target player's graveyard. You may cast spells from among those cards for as long as they remain exiled, and mana of any type can be spent to cast them.

Enchant player

At the beginning of each of enchanted player's postcombat main phases, there is an additional beginning phase after this phase. (The end step happens after the added untap, upkeep, and draw steps.)

Flying, ward

When Shadow Puppeteers enters, create two 1/1 black Faerie Rogue creature tokens with flying.

Whenever a creature you control with flying attacks, you may have it become a red Dragon with base power and toughness 4/4 in addition to its other colors and types until end of turn.

Target creature gains shadow until end of turn. (It can block or be blocked by only creatures with shadow.)

Draw a card.