From Binding of Isaac: Rebirth Wiki
Jump to: navigation, search
Font TeamMeat B.pngFont TeamMeat F.pngFont TeamMeat F.pngFont TeamMeat S.pngFont TeamMeat emark.png
Item icon
Item altar
Table dividing line 1.png


Character appearance
Table dividing line 2.png

Shop Shop
Greed mode only Shop Shop
Table dividing line 3.png

Added in Afterbirth(page 3, column 3, row 1)
Removed in Afterbirth(page 3, column 3, row 5)

BFFS! is a passive item.

Effects[edit | edit source]

  • Visually increases the size of all familiars by 25%, and improves the effectiveness of most of them.
    • Doubles the damage of Familiars that deal damage through tears and contact damage.
      • Only affects familiars that deal a set amount of damage. Has no effect on most familiars that scale with Isaac's damage.
      • Has no effect on Creep generated by familiars.
    • For pickup-generating familiars, increases the frequency that they drop pickups.
      • Familiars that require clearing a certain number of rooms will require one less room.
      • Familiars that have a random chance to drop items have a higher chance.
      • Familiars that pick up consumables require less, except Dark Bum Dark Bum which is unaffected.
    • Some familiars have unique synergies.

Notes[edit | edit source]

  • The size change is only cosmetic: familiars' hitbox for blocking damage or attacking is not affected.
  • Familiars summoned by a trinket or by Monster Manual Monster Manual are also affected by BFFS!.
  • The Blue Flies and Blue Spiders benefit from Hive Mind Hive Mind instead.
  • Does not increase the frequency or effectiveness of Status Effects applied by familiars.

Synergies[edit | edit source]

  • BBF BBF/Bob's Brain Bob's Brain: Doubles impact damage and increases explosive damage by 25.
  • Added in AfterbirthIncubus Incubus/Added in AfterbirthFate's Reward Fate's Reward: Deals double Isaac's damage instead of copying it.
  • Juicy Sack Juicy Sack: Spawns an extra Blue Spider.
  • Added in Afterbirth †Lil Spewer Lil Spewer: Increases the creep pool's size, but not its damage.
  • Added in Afterbirth †Mystery Egg Mystery Egg: Spawns a champion variant of the enemy, even if the enemy can't normally be a champion.

Interactions[edit | edit source]

  • Added in AfterbirthEvil Eye Evil Eye: The eyes are not treated as familiars and therefore will not synergize with BFFS!
  • Guillotine Guillotine/Scissors Scissors: Doesn't change the head's size, but still improves its damage.
  • Orbitals: The damage is doubled as expected, but the hitbox for orbitals does not increase for additional protection or reach.
  • Added in Afterbirth †Shade Shade: Retains the increased damage even after being absorbed.

No Effect[edit | edit source]

The following familiars will appear larger, but gain no actual benefits.

In-game Footage[edit | edit source]

Trivia[edit | edit source]

  • BFF stands for Best Friends Forever.
  • This item is used in The Family Man (challenge #19).

The Binding of Isaac: Rebirth The Binding of Isaac: Rebirth The Binding of Isaac: Rebirth
Achievements Achievements Attributes Attributes Bosses Bosses TarotCard.png Cards and Runes Challenges Challenges Chapters Chapters
Characters Characters MainPageBabies.png Co-op Items Items Item pools Item pools Monsters Monsters Objects Objects
Pickups Pickups Pills Pills Rooms Rooms Seeds Seeds Transformations Transformations Trinkets Trinkets