Dad's Key

Effect

• Upon activation, opens all doors in the current room in almost all circumstances.

Notes

• Dad's Key can open:

1. Any normal doors that are closed during combat, even on floors that normally disallow this;
2. Any dоor requiring (Key) Keys;
3. Any door requiring (Bomb) Bombs to blow open (including (Secret Room) Secret Room and (Super Secret Room) Super Secret Room doors);
4. (Challenge Room) Challenge Room and (Boss Challenge Room) Boss Challenge Room doors regardless of health total;
5. The door to the (Mega Satan) Mega Satan arena;
6. The (Boss Rush) Boss Rush door from inside;
7. The doors of a (Mini-Boss Room) Mini-Boss Room from inside;
8. Most (Boss Room) Boss Room dоors from inside;
9. (Added in Repentance) The (Mausoleum) Mausoleum / (Gehenna) Gehenna doors without paying the health cost.

• Dad's Key cannot open:

1. The Boss Rush door if the timer has already passed 20 minutes;
2. The door to the room leading to (???) ??? if the timer has already passed 30 minutes;
3. (Angel Room) Angel Room or (Devil Room) Devil Room doors;
4. Locked Chests of any kind, or Key Blоcks;
5. The door of Mom's Boss Room from inside;
6. (Added in Afterbirth / Removed in Repentance) The exit door in Greed mode;
7. (Added in Afterbirth †) The door to (The Void) The Void during the (Hush) Hush boss fight;
8. (Added in Repentance) The flesh door leading to (Corpse) Corpse;
9. (Added in Repentance) (A Strange Door) A Strange Door.

Synergies

• (Added in Repentance) Book of Virtues: Creates wisps in the middle ring. If the wisps touch locked Chests or Special Room doors, they will unlock them, destroying themselves in the process. These wisps can open ANY locked door they touch, including the door to the (Mega Satan) Mega Satan arena, (A Strange Door) A Strange Door, and the flesh door to (Corpse) Corpse. (Bomb Chest) Bomb Chests and (Mega Chest) Mega Chests are unaffected.