Minus Shard is a consumable in Repentance Negative, a mod for The Binding of Isaac.

-0.1 speed.
-1.0 fire rate.
-0.75 flat damage.
-0.62 range.

Adds a floating minus symbol above Isaac's head.

Clearing the next room returns all stats back to normal, and additionally grants:
+0.1 speed.
+0.1 fire rate.
+0.85 flat damage.
+0.62 range.

Clearing another room further increases the stats:
+0.1 speed.
+1.1 fire rate.
+0.85 flat damage.
+0.62 range.

While the minus shard is active above Isaac's head, getting hit 2 times (or 1 after the first room clear) will cancel out the progress and keep the current stats granted by it forever.

• Download Repentance Negative from the Steam Workshop.