Name: Sidewinder Sliver Cost: W Type: Creature -- Sliver Pow/Tgh: 1/1 Rules Text: All Sliver creatures have flanking. (Whenever a creature without flanking blocks a Sliver, the blocking creature gets -1/-1 until end of turn.) Set/Rarity: Time Spiral common, Secret Lair Drop rare, Time Spiral Remastered common Price: $0.15

Name: Sidisi's Pet Cost: 3B Type: Creature -- Zombie Ape Pow/Tgh: 1/4 Rules Text: Lifelink (Damage dealt by this creature also causes you to gain that much life.) Morph {1}{B} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) Set/Rarity: Khans of Tarkir common Price: $0.06

Name: Sidisi, Regent of the Mire Cost: 1B Type: Legendary Creature -- Zombie Snake Warlock Pow/Tgh: 1/3 Rules Text: {T}, Sacrifice a creature you control with mana value X other than Sidisi: Return target creature card with mana value X plus 1 from your graveyard to the battlefield. Activate only as a sorcery. Set/Rarity: Tarkir: Dragonstorm Promos rare, Tarkir: Dragonstorm rare Price: $0.26

Name: Sidisi, Undead Vizier Cost: 3BB Type: Legendary Creature -- Zombie Snake Pow/Tgh: 4/6 Rules Text: Deathtouch Exploit (When this creature enters, you may sacrifice a creature.) When Sidisi exploits a creature, you may search your library for a card, put it into your hand, then shuffle. Set/Rarity: Dragons of Tarkir rare, Dragons of Tarkir Promos rare, The List rare, Pioneer Masters rare Price: $5.37

Name: Siege Mastodon Cost: 4W Type: Creature -- Elephant Pow/Tgh: 3/5 Rules Text: Set/Rarity: Magic 2010 common, Magic 2011 common, Magic 2012 common, Magic 2014 common, Core Set 2020 common Price: $0.04

Name: Siege Striker Cost: 2W Type: Creature -- Human Soldier Pow/Tgh: 1/1 Rules Text: Double strike (This creature deals both first-strike and regular combat damage.) Whenever this creature attacks, you may tap any number of untapped creatures you control. This creature gets +1/+1 until end of turn for each creature tapped this way. Set/Rarity: Core Set 2021 uncommon Price: $0.07

Name: Siege Veteran Cost: 2W Type: Creature -- Human Soldier Pow/Tgh: 2/2 Rules Text: At the beginning of combat on your turn, put a +1/+1 counter on target creature you control. Whenever another nontoken Soldier you control dies, create a 1/1 colorless Soldier artifact creature token. Set/Rarity: Magic Online Promos rare, The Brothers' War Promos rare, The Brothers' War rare Price: $0.22

Name: Siege Zombie Cost: 1B Type: Creature -- Zombie Pow/Tgh: 2/2 Rules Text: Tap three untapped creatures you control: Each opponent loses 1 life. Set/Rarity: The List common, Innistrad: Midnight Hunt common, Innistrad: Double Feature common, Innistrad Remastered common Price: $0.04

Name: Siegecraft Cost: 3W Type: Enchantment -- Aura Rules Text: Enchant creature Enchanted creature gets +2/+4. Set/Rarity: Khans of Tarkir common, The List common Price: $0.05

Name: Siegfried, Famed Swordsman Cost: 3B Type: Legendary Creature -- Human Warrior Rogue Pow/Tgh: 2/2 Rules Text: Menace When Siegfried enters, mill three cards. Then put X +1/+1 counters on Siegfried, where X is twice the number of creature cards in your graveyard. Set/Rarity: Final Fantasy Commander rare Price: $0.13

Name: Sierra, Nuka's Biggest Fan Cost: 3W Type: Legendary Creature -- Human Citizen Pow/Tgh: 3/4 Rules Text: The Nuka-Cola Challenge -- Whenever one or more creatures you control deal combat damage to a player, put a quest counter on Sierra and create a Food token. Whenever you sacrifice a Food, target creature you control gets +X/+X until end of turn, where X is the number of quest counters on Sierra. Set/Rarity: Fallout rare Price: $0.17

Name: Sifter of Skulls Cost: 3B Type: Creature -- Eldrazi Pow/Tgh: 4/3 Rules Text: Devoid (This card has no color.) Whenever another nontoken creature you control dies, create a 1/1 colorless Eldrazi Scion creature token. It has "Sacrifice this token: Add {C}." ({C} represents colorless mana.) Set/Rarity: Oath of the Gatewatch rare, Oath of the Gatewatch Promos rare, Modern Horizons 3 Commander rare Price: $0.67

Name: Sigarda's Aid Cost: W Type: Enchantment Rules Text: You may cast Aura and Equipment spells as though they had flash. Whenever an Equipment you control enters, you may attach it to target creature you control. Set/Rarity: Eldritch Moon Promos rare, Eldritch Moon rare, Secret Lair Drop rare, Commander Legends rare, Shadows over Innistrad Remastered rare Price: $15.25

Name: Sigarda's Imprisonment Cost: 2W Type: Enchantment -- Aura Rules Text: Enchant creature Enchanted creature can't attack or block. {4}{W}: Exile enchanted creature. Create a Blood token. (It's an artifact with "{1}, {T}, Discard a card, Sacrifice this token: Draw a card.") Set/Rarity: Innistrad: Crimson Vow common, Innistrad: Double Feature common Price: $0.04

Name: Sigarda's Splendor Cost: 2WW Type: Enchantment Rules Text: As this enchantment enters, note your life total. At the beginning of your upkeep, draw a card if your life total is greater than or equal to the last noted life total for this enchantment. Then note your life total. Whenever you cast a white spell, you gain 1 life. Set/Rarity: Magic Online Promos rare, Innistrad: Midnight Hunt rare, Innistrad: Midnight Hunt Promos rare, Innistrad: Double Feature rare Price: $0.52

Name: Sigarda's Summons Cost: 4WW Type: Enchantment Rules Text: Creatures you control with +1/+1 counters on them have base power and toughness 4/4, have flying, and are Angels in addition to their other types. Set/Rarity: Magic Online Promos rare, Innistrad: Crimson Vow Promos rare, Innistrad: Crimson Vow rare, Innistrad: Double Feature rare Price: $0.22

Name: Sigarda's Vanguard Cost: 4W Type: Creature -- Angel Pow/Tgh: 3/3 Rules Text: Flash Flying Whenever this creature enters or attacks, choose any number of creatures with different powers. Those creatures gain double strike until end of turn. Set/Rarity: Midnight Hunt Commander rare Price: $0.92

Name: Sigardian Priest Cost: 1W Type: Creature -- Human Cleric Pow/Tgh: 1/2 Rules Text: {1}, {T}: Tap target non-Human creature. Set/Rarity: Eldritch Moon common, Shadows over Innistrad Remastered common Price: $0.07

Name: Sigardian Savior Cost: 3WW Type: Creature -- Angel Pow/Tgh: 3/3 Rules Text: Flying When this creature enters, if you cast it, return up to two target creature cards with mana value 2 or less from your graveyard to the battlefield. Set/Rarity: Magic Online Promos mythic, Innistrad: Midnight Hunt mythic, Innistrad: Midnight Hunt Promos mythic, Innistrad: Double Feature mythic Price: $0.31

Name: Sightless Brawler Cost: 1W Type: Enchantment Creature -- Human Warrior Pow/Tgh: 3/2 Rules Text: Bestow {4}{W} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached.) This creature can't attack alone. Enchanted creature gets +3/+2 and can't attack alone. Set/Rarity: Journey into Nyx uncommon Price: $0.03