diff --git a/LTTP_RND_GeneralBugfixes.asm b/LTTP_RND_GeneralBugfixes.asm
index f89d446..55c2b86 100644
--- a/LTTP_RND_GeneralBugfixes.asm
+++ b/LTTP_RND_GeneralBugfixes.asm
@@ -26,7 +26,7 @@ org $3FFFFF ; <- 1FFFFF
 db #$00 ; expand file to 2mb
 
 org $1FFFF8 ; timestamp rom
-dl #$20170731
+dl #$20170801
 
 ;================================================================================
 
diff --git a/hardmode.asm b/hardmode.asm
index 5ec395f..e1235c2 100644
--- a/hardmode.asm
+++ b/hardmode.asm
@@ -14,4 +14,32 @@ CalculateSpikeFloorDamage:
 	LDA $D055, Y
 	STA $0373
 RTL
-;--------------------------------------------------------------------------------
\ No newline at end of file
+;--------------------------------------------------------------------------------
+CalculateByrnaUsage:
+	LDA $1B : BEQ +
+	REP #$20 ; set 16-bit accumulator
+	LDA $A0 ; these are all decimal because i got them that way
+	CMP.w #279
+	SEP #$20 ; set 8-bit accumulator
+	BNE +
+		PHX : TYX
+		LDA.l ByrnaCaveCaneOfByrnaUsage, X : STA $00
+		PLX
+	+
+	LDA $7EF36E ; thing we wrote over
+RTL
+;--------------------------------------------------------------------------------
+CalculateCapeUsage:
+	LDA $1B : BEQ +
+	REP #$20 ; set 16-bit accumulator
+	LDA $A0 ; these are all decimal because i got them that way
+	CMP.w #279
+	SEP #$20 ; set 8-bit accumulator
+	BNE +
+		PHX : TYX
+		LDA.l ByrnaCaveCapeUsage, X : STA $4C
+		PLX
+	+
+	LDA $7EF36E ; thing we wrote over
+RTL
+;--------------------------------------------------------------------------------
diff --git a/hooks.asm b/hooks.asm
index b06ee6d..deb99f4 100644
--- a/hooks.asm
+++ b/hooks.asm
@@ -202,6 +202,12 @@ NOP #2
 org $07D22B ; <- 3D22B - Bank05.asm : 12752 (LDA $D055, Y : STA $0373)
 JSL.l CalculateSpikeFloorDamage : NOP #2
 ;--------------------------------------------------------------------------------
+org $08DCC3 ; <- 45CC3 - ancilla_cane_spark.asm : 272 (LDA $7EF36E)
+JSL.l CalculateByrnaUsage
+;--------------------------------------------------------------------------------
+org $07AE17 ; <- 3AE17 - Bank07.asm : 7285 (LDA $7EF36E)
+JSL.l CalculateCapeUsage
+;--------------------------------------------------------------------------------
 
 ;================================================================================
 ; Misc Stats
diff --git a/tables.asm b/tables.asm
index be9200b..9f72b49 100644
--- a/tables.asm
+++ b/tables.asm
@@ -677,6 +677,12 @@ db #$00 ; #00 = Never Locked - #$01 = Locked During Escape (default)
 org $30816A ; PC 0x18016A
 FreeItemText:
 db #$01 ; #00 = Off - #$01 = On (default)
+org $30816B ; PC 0x18016B
+ByrnaCaveCaneOfByrnaUsage:
+db #$04, #$02, #$01 ; normal, 1/2, 1/4 magic
+org $30816E ; PC 0x18016E
+ByrnaCaveCapeUsage:
+db #$04, #$08, #$10 ; normal, 1/2, 1/4 magic
 ;================================================================================
 org $308190 ; PC 0x180190
 TimerStyle: