BBF

Effects

• Spawns a familiar that flies around the room like a (Boom Fly) Boom Fly and explodes on contact with an enemy, dealing 60 damage to all enemies within its blast radius and 10 damage to the enemy it touched.
• (Added in Repentance) Deals 100 damage to all enemies within its blast radius and 10 damage to the enemy it touched.
  • It will respawn 10 seconds after exploding, or upon entering a different room.
• This item belongs to the Beelzebub set. Collecting three items from this set will transform Isaac into a giant humanoid fly.

Notes

• Most obtained bomb modifiers are applied to BBF as well.
• The blast can damage Isaac as a normal bomb would.
• For the first few moments after entering a room, the familiar will do contact damage instead of exploding. This means the familiar will not blow up in Isaac's face if there is an enemy right next to the familiar's starting point. However, it may kill enemies that explode on death.

Synergies

• BFFS! / Hive Mind: Doubles the contact damage to 20 and increases explosion damage by 25.
  • (Added in Repentance) Contact damage becomes 20 and explosion damage increases to 125.
• Mr. Mega: The explosion damage increases by 50 points.

Interactions

• Effects applied as normal:
  • (Added in Repentance) Blood Bombs
  • (Added in Repentance) Brimstone Bombs
  • Butt Bombs
  • (Added in Afterbirth) Glitter Bombs
  • Hot Bombs
  • (Added in Repentance) Nancy Bombs
  • Sad Bombs
• No effect:
  • Bobby-Bomb
  • (Added in Afterbirth †) Fast Bombs
  • (Added in Repentance) Ghost Bombs
  • (Added in Repentance) Rocket in a Jar
  • (Added in Afterbirth) Scatter Bombs
  • (Added in Afterbirth) Sticky Bombs
• Bob's Curse: The explosion applies poison effect.
  • (Added in Repentance)Does not leave the poison cloud.
• (Removed in Repentance) Bomber Boy: No cross explosions. Damage from the explosion is halved against the initial target, but others caught in the blast take full damage.
  • (Added in Repentance) Explodes in a cross-shaped pattern. Damage from the main explosion deals a flat 37.5 damage, and any additional explosion deals flat 75 damage to which Bomber boy's damage reduction is not applied.
    • Bomber Boy + BFFS! / Hive Mind: Explosion damages are increased to 1.25x, which are 46.875/93.75 each.
    • Bomber Boy + Mr. Mega: Explosion damages are increased to 1.5x, which are 56.25/112.5 each.
    • Bomber Boy + BFFS! / Hive Mind + Mr. Mega: Explosion damages are increased to 1.75x, which are 65.625/131.25 each.