Regret of Rin - The Binding of Isaac

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Regret of Rin is a consumable in Reverie: Make Good Omissions, a mod for The Binding of Isaac.

Turns all pickups, chests, and non-boss enemies in the room into Chaos Data.

Converts all items in the room into glitched items.

The following special synergies and interactions for Regret of Rin have been documented.

Mod	Item	Synergy
Reverie	Rune Sword	When the Regret of Rin is inserted, causes newly generated item pedestals to indefinitely cycle between the original item and an additional glitched item. Does not affect quest items.
---	Clear Rune	Mimic recharge time: 6 rooms

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

Since

Rin’s costume is derived from C62 circle cut design of the Team Shanghai Alice poster girl—a character who holds an erhu—thus, the appearance of this rune imitates the musical notes.

Since

Rin is designed as a character outside the scope of normal and Tainted Characters (The description "Between the Two Sides" that displays when this rune is inserted into the Rune Sword also hints at this fact), she have no so-called Tainted variant and never will—which means there is no corresponding “Soul Stone” for

Rin (as in the original game, a “Soul Stone” is a rune that requires the corresponding Tainted Character to unlock). In form, this rune can be regarded as “Soul of Rin” or a substitute item with the same function as a “Soul Stone”.