Name: Spectrum Sentinel Cost: 1 Type: Artifact Creature -- Soldier Pow/Tgh: 1/2 Rules Text: Protection from multicolored (This creature can't be blocked, targeted, dealt damage, enchanted, or equipped by anything multicolored.) Whenever a nonbasic land an opponent controls enters, you gain 1 life. Set/Rarity: The Brothers' War uncommon Price: $0.32

Name: Spell Satchel Cost: 2 Type: Artifact Rules Text: Magecraft -- Whenever you cast or copy an instant or sorcery spell, put a book counter on this artifact. {T}, Remove a book counter from this artifact: Add {C}. {3}, {T}, Remove three book counters from this artifact: Draw a card. Set/Rarity: Strixhaven: School of Mages uncommon Price: $0.11

Name: Spellbinder Cost: 3 Type: Artifact -- Equipment Rules Text: Imprint -- When this Equipment enters, you may exile an instant card from your hand. Whenever equipped creature deals combat damage to a player, you may copy the exiled card. If you do, you may cast the copy without paying its mana cost. Equip {4} Set/Rarity: Darksteel rare Price: $4.94

Name: Spellbook Cost: 0 Type: Artifact -- Book Rules Text: You have no maximum hand size. Set/Rarity: Exodus uncommon, Seventh Edition uncommon, Eighth Edition uncommon, Ninth Edition uncommon, Tenth Edition uncommon, Magic 2010 uncommon, The List uncommon Price: $2.35

Name: Spellbook Vendor Cost: 1W Type: Creature -- Human Peasant Pow/Tgh: 2/2 Rules Text: Vigilance At the beginning of combat on your turn, you may pay {1}. When you do, create a Sorcerer Role token attached to target creature you control. (If you control another Role on it, put that one into the graveyard. Enchanted creature gets +1/+1 and has "Whenever this creature attacks, scry 1.") Set/Rarity: Wilds of Eldraine rare, Wilds of Eldraine Promos rare Price: $0.40

Name: Spelltithe Enforcer Cost: 3WW Type: Creature -- Elephant Wizard Pow/Tgh: 3/3 Rules Text: Whenever an opponent casts a spell, that player sacrifices a permanent of their choice unless they pay {1}. Set/Rarity: Guildpact rare, The List rare Price: $3.37

Name: Spellweaver Helix Cost: 3 Type: Artifact Rules Text: Imprint -- When this artifact enters, you may exile two target sorcery cards from a single graveyard. Whenever a player casts a card, if it has the same name as one of the cards exiled with this artifact, you may copy the other. If you do, you may cast the copy without paying its mana cost. Set/Rarity: Mirrodin rare Price: $2.46

Name: Sphere of Annihilation Cost: XB Type: Artifact Rules Text: This artifact enters with X void counters on it. At the beginning of your upkeep, exile this artifact, all creatures and planeswalkers with mana value less than or equal to the number of void counters on it, and all creature and planeswalker cards in graveyards with mana value less than or equal to the number of void counters on it. Set/Rarity: Magic Online Promos rare, Adventures in the Forgotten Realms Promos rare, Adventures in the Forgotten Realms rare Price: $0.22

Name: Sphere of Duty Cost: 3W Type: Enchantment Rules Text: If a green source would deal damage to you, prevent 2 of that damage. Set/Rarity: Odyssey uncommon Price: $0.15

Name: Sphere of Grace Cost: 3W Type: Enchantment Rules Text: If a black source would deal damage to you, prevent 2 of that damage. Set/Rarity: Odyssey uncommon Price: $0.20

Name: Sphere of Law Cost: 3W Type: Enchantment Rules Text: If a red source would deal damage to you, prevent 2 of that damage. Set/Rarity: Odyssey uncommon Price: $0.34

Name: Sphere of Purity Cost: 3W Type: Enchantment Rules Text: If an artifact would deal damage to you, prevent 1 of that damage. Set/Rarity: Mirrodin common Price: $0.03

Name: Sphere of Reason Cost: 3W Type: Enchantment Rules Text: If a blue source would deal damage to you, prevent 2 of that damage. Set/Rarity: Odyssey uncommon Price: $0.21

Name: Sphere of Resistance Cost: 2 Type: Artifact Rules Text: Spells cost {1} more to cast. Set/Rarity: Exodus rare, World Championship Decks 1999 rare, Vintage Masters rare, Kaladesh Inventions special, Secret Lair Drop rare Price: $8.66

Name: Sphere of Safety Cost: 4W Type: Enchantment Rules Text: Creatures can't attack you or planeswalkers you control unless their controller pays {X} for each of those creatures, where X is the number of enchantments you control. Set/Rarity: Return to Ravnica uncommon, Commander 2016 uncommon, Secret Lair Drop rare, Ravnica Remastered uncommon, Duskmourn: House of Horror Commander uncommon, Pioneer Masters uncommon Price: $3.21

Name: Sphere of Truth Cost: 3W Type: Enchantment Rules Text: If a white source would deal damage to you, prevent 2 of that damage. Set/Rarity: Odyssey uncommon Price: $0.18

Name: Sphere of the Suns Cost: 2 Type: Artifact Rules Text: This artifact enters tapped and with three charge counters on it. {T}, Remove a charge counter from this artifact: Add one mana of any color. Set/Rarity: Mirrodin Besieged uncommon, Modern Masters 2015 common Price: $0.11

Name: Sphinx's Decree Cost: 1W Type: Sorcery Rules Text: Each opponent can't cast instant or sorcery spells during that player's next turn. Set/Rarity: Rivals of Ixalan rare, Rivals of Ixalan Promos rare Price: $0.20

Name: Sphinx-Bone Wand Cost: 7 Type: Artifact Rules Text: Whenever you cast an instant or sorcery spell, you may put a charge counter on this artifact. If you do, this artifact deals damage equal to the number of charge counters on it to any target. Set/Rarity: Rise of the Eldrazi rare, Duel Decks: Izzet vs. Golgari rare Price: $0.41

Name: Spider-Bot Cost: 2 Type: Artifact Creature -- Spider Robot Scout Pow/Tgh: 2/1 Rules Text: Reach When this creature enters, you may search your library for a basic land card, reveal it, then shuffle and put that card on top. Set/Rarity: Through the Omenpaths common, Marvel's Spider-Man common Price: $0.17