| Blindness/Deafness | 2nd-level | necromancy | cleric, bard, sorcerer, warlock, wizard | 5e Core Rules |
| Blindness/Deafness | 2nd-level | necromancy | bard, cleric, sorcerer, wizard | Level Up Advanced 5e |
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| Blizzard | 7th-level | conjuration | sorcerer, warlock, wizard | Deep Magic 5e |
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| Blood Armor | 3rd-level | necromancy | sorcerer, warlock, wizard | Deep Magic 5e |
| Blood Lure | 2nd-level | enchantment | cleric, sorcerer, wizard | Deep Magic 5e |
| Blood Offering | 3rd-level | necromancy | druid, ranger, sorcerer, warlock, wizard | Deep Magic 5e |
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| Blood Scarab | 1st-level | necromancy | cleric, warlock | Deep Magic 5e |
| Blood Spoor | 4th-level | divination | — | Deep Magic 5e |
| Blood Strike | 5th-level | necromancy | — | Kobold Press Compilation |
| Blood Tide | Cantrip | necromancy | sorcerer, wizard | Deep Magic 5e |
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| Blood-Writ Bargain | 3rd-level | conjuration | cleric, herald, warlock, wizard | Level Up Advanced 5e |
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| Bloodlust | 2nd-level | enchantment | wizard | Tome of Heroes |
| Bloodshot | 2nd-level | conjuration | sorcerer, warlock, wizard | Deep Magic 5e |
| Bloody Hands | 1st-level | necromancy | sorcerer, warlock, wizard | Deep Magic 5e |
| Bloody Smite | 1st-level | necromancy | cleric, druid, ranger, wizard | Deep Magic 5e |
| Bloom | 8th-level | conjuration | cleric, druid, wizard | Deep Magic 5e |
| Blunted Edge | 3rd-level | enchantment | cleric, sorceror, warlock, wizard | Tome of Heroes |
| Blur | 2nd-level | illusion | artificer, sorcerer, wizard | Level Up Advanced 5e |
| Blur | 2nd-level | illusion | druid, sorcerer, wizard | 5e Core Rules |
| Boiling Blood | 4th-level | necromancy | sorcerer, warlock, wizard | Deep Magic 5e |
| Boiling Oil | 2nd-level | conjuration | sorcerer, wizard | Deep Magic 5e |
| Bolster Fortifications | 3rd-level | abjuration | bard, wizard | Tome of Heroes |
| Bolster Undead | 1st-level | necromancy | cleric, sorcerer, warlock, wizard | Deep Magic 5e |
| Bombardment of Stings | 2nd-level | evocation | druid, ranger, wizard | Warlock Archives |
| Booster Shot | 3rd-level | evocation | ranger, sorcerer, warlock | Deep Magic 5e |
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| Borrowing | 3rd-level | necromancy | anti-paladin | Deep Magic Extended |
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| Bound Haze | 3rd-level | conjuration | sorceror, warlock, wizard | Tome of Heroes |
| Branding Smite | 2nd-level | evocation | paladin | 5e Core Rules |
| Breathtaking Wind | 1st-level | evocation | druid, ranger, sorcerer, warlock, wizard | Deep Magic 5e |
| Breeze Compass | 3rd-level | divination | druid, wizard | Deep Magic 5e |
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| Broken Charge | 1st-level | enchantment | bard, warlock, wizard | Deep Magic 5e |
| Burning Hands | 1st-level | evocation | cleric, sorcerer, warlock, wizard | 5e Core Rules |
| Burning Hands | 1st-level | evocation | artificer, sorcerer, wizard | Level Up Advanced 5e |
| Burst Stone | 3rd-level | evocation | druid, sorceror, warlock, wizard | Tome of Heroes |
| Butterfly Effect | 2nd-level | enchantment | bard, druid, sorceror, warlock, wizard | Tome of Heroes |
| By the Light of the Moon | 2nd-level | divination | cleric, druid, ranger, wizard | Deep Magic 5e |
| By the Light of the Watchful Moon | 4th-level | divination | cleric, druid, paladin, ranger, sorcerer, wizard | Deep Magic 5e |