Insatiable Apatite is a trinket in Fiend Folio, a mod for The Binding of Isaac.

Picking up hearts grants a temporary damage up based on the type of heart. Hearts can also be collected when health is full.

Half Red Heart: +1 damage.
Heart: +2 damage.
Scared Heart: +2 damage.
Double Red Heart: +4 damage.
Rotten Heart: +0.5 damage; +4 Blue Flies.
Blended Heart: +2 damage.
Soul Heart: +2 damage that fades 2x slower.
Half Soul Heart: +1 damage that fades 2x slower.
Black Heart: +1 damage; cannot be picked up when health is full; activates The Necronomicon when damage fades away.
Eternal Heart: 50% chance to give +6 damage and heal 6 red heart containers; 50% chance to give no extras.
Gold Heart: +2 damage; +7 coins (3 with reduced effect).
Bone Heart: +4 damage; +8 bone orbital familiars; spawns a Bony familiar when picked up with full health.

If the heart was picked up to heal, the damage boost and other extras are reduced by 50%.

Damage up fades at a rate of 0.06 per second.

The following special synergies and interactions for Insatiable Apatite have been documented.

* Note that not all possible synergies and interactions are listed here.

• Check out the trinket description on the mod's external Wiki.
• Download Fiend Folio from the Steam Workshop.