Name: Book of Rass Cost: 6 Type: Artifact Rules Text: {2}, Pay 2 life: Draw a card. Set/Rarity: The Dark uncommon, Chronicles Foreign Black Border rare, Chronicles rare, Masters Edition IV uncommon Price: $0.37

Name: Boom Box Cost: 2 Type: Artifact Rules Text: {6}, {T}, Sacrifice this artifact: Destroy up to one target artifact, up to one target creature, and up to one target land. Set/Rarity: Outlaws of Thunder Junction uncommon Price: $0.07

Name: Boompile Cost: 4 Type: Artifact Rules Text: {T}: Flip a coin. If you win the flip, destroy all nonland permanents. Set/Rarity: Commander 2016 rare, Treasure Chest rare, The List rare, Commander Masters rare Price: $0.43

Name: Boon Reflection Cost: 4W Type: Enchantment Rules Text: If you would gain life, you gain twice that much life instead. Set/Rarity: Shadowmoor rare, Double Masters rare Price: $12.16

Name: Boon of Emrakul Cost: 2B Type: Enchantment -- Aura Rules Text: Enchant creature Enchanted creature gets +3/-3. Set/Rarity: Eldritch Moon common, The List common Price: $0.02

Name: Boon of Erebos Cost: B Type: Instant Rules Text: Target creature gets +2/+0 until end of turn. Regenerate it. You lose 2 life. Set/Rarity: Theros common Price: $0.05

Name: Boon of Safety Cost: W Type: Instant Rules Text: Put a shield counter on target creature. (If it would be dealt damage or destroyed, remove a shield counter from it instead.) Scry 1. Set/Rarity: Streets of New Capenna common Price: $0.10

Name: Boon of the Spirit Realm Cost: 3WW Type: Enchantment Rules Text: Constellation -- Whenever this enchantment or another enchantment you control enters, put a blessing counter on this enchantment. Creatures you control get +1/+1 for each blessing counter on this enchantment. Set/Rarity: Commander Masters rare Price: $2.16

Name: Boon-Bringer Valkyrie Cost: 3WW Type: Creature -- Angel Warrior Pow/Tgh: 4/4 Rules Text: Backup 1 (When this creature enters, put a +1/+1 counter on target creature. If that's another creature, it gains the following abilities until end of turn.) Flying, first strike, lifelink Set/Rarity: March of the Machine rare, March of the Machine Promos rare Price: $0.34

Name: Boonweaver Giant Cost: 6W Type: Creature -- Giant Monk Pow/Tgh: 4/4 Rules Text: When this creature enters, you may search your graveyard, hand, and/or library for an Aura card and put it onto the battlefield attached to this creature. If you search your library this way, shuffle. Set/Rarity: Magic 2015 uncommon, The List uncommon Price: $0.09

Name: Boot Nipper Cost: 1B Type: Creature -- Beast Pow/Tgh: 2/1 Rules Text: This creature enters with your choice of a deathtouch counter or a lifelink counter on it. Set/Rarity: Ikoria: Lair of Behemoths common Price: $0.08

Name: Border Guard Cost: 2W Type: Creature -- Human Soldier Pow/Tgh: 1/4 Rules Text: Set/Rarity: Portal common, Starter 1999 common Price: $0.14

Name: Border Patrol Cost: 4W Type: Creature -- Human Nomad Pow/Tgh: 1/6 Rules Text: Vigilance Set/Rarity: Judgment common Price: $0.08

Name: Boreal Griffin Cost: 3WW Type: Snow Creature -- Griffin Pow/Tgh: 3/2 Rules Text: Flying {S}: This creature gains first strike until end of turn. ({S} can be paid with one mana from a snow source.) Set/Rarity: Coldsnap common Price: $0.12

Name: Boreas Charger Cost: 2W Type: Creature -- Pegasus Pow/Tgh: 2/1 Rules Text: Flying When this creature leaves the battlefield, choose an opponent who controls more lands than you. Search your library for a number of Plains cards equal to the difference, reveal those cards, put one of them onto the battlefield tapped and the rest into your hand, then shuffle. Set/Rarity: Treasure Chest rare, Commander 2018 rare, Commander 2021 rare, Crimson Vow Commander rare Price: $0.22

Name: Born to Drive Cost: 2W Type: Enchantment -- Aura Rules Text: Enchant artifact or creature As long as enchanted permanent is a creature, it gets +1/+1 for each creature and/or Vehicle you control. Channel -- {2}{W}, Discard this card: Create two 1/1 colorless Pilot creature tokens with "This token crews Vehicles as though its power were 2 greater." Set/Rarity: Kamigawa: Neon Dynasty uncommon Price: $0.09

Name: Boromir, Warden of the Tower Cost: 2W Type: Legendary Creature -- Human Soldier Pow/Tgh: 3/3 Rules Text: Vigilance Whenever an opponent casts a spell, if no mana was spent to cast it, counter that spell. Sacrifice Boromir: Creatures you control gain indestructible until end of turn. The Ring tempts you. Set/Rarity: The Lord of the Rings: Tales of Middle-earth rare, Tales of Middle-earth Promos rare Price: $2.63

Name: Boros Elite Cost: W Type: Creature -- Human Soldier Pow/Tgh: 1/1 Rules Text: Battalion -- Whenever this creature and at least two other creatures attack, this creature gets +2/+2 until end of turn. Set/Rarity: Gatecrash uncommon, GRN Guild Kit uncommon, The List uncommon, Jumpstart: Historic Horizons uncommon, Ravnica Remastered common Price: $0.06

Name: Boros Mastiff Cost: 1W Type: Creature -- Dog Pow/Tgh: 2/2 Rules Text: Battalion -- Whenever this creature and at least two other creatures attack, this creature gains lifelink until end of turn. (Damage dealt by a creature with lifelink also causes its controller to gain that much life.) Set/Rarity: Dragon's Maze common Price: $0.05

Name: Borrowed Grace Cost: 2W Type: Instant Rules Text: Escalate {1}{W} (Pay this cost for each mode chosen beyond the first.) Choose one or both -- - Creatures you control get +2/+0 until end of turn. - Creatures you control get +0/+2 until end of turn. Set/Rarity: Eldritch Moon common, The List common, Shadows over Innistrad Remastered common Price: $0.02