diff --git a/spec b/spec
index 12fce05ce9..601a46f403 100644
--- a/spec
+++ b/spec
@@ -4602,8 +4602,7 @@ beginseg
     name "ovl_Eff_Stk"
     compress
     include "build/src/overlays/actors/ovl_Eff_Stk/z_eff_stk.o"
-    include "build/data/ovl_Eff_Stk/ovl_Eff_Stk.data.o"
-    include "build/data/ovl_Eff_Stk/ovl_Eff_Stk.reloc.o"
+    include "build/src/overlays/actors/ovl_Eff_Stk/ovl_Eff_Stk_reloc.o"
 endseg
 
 beginseg
diff --git a/src/overlays/actors/ovl_Eff_Stk/z_eff_stk.c b/src/overlays/actors/ovl_Eff_Stk/z_eff_stk.c
index 4d66cc8276..88c604c5e6 100644
--- a/src/overlays/actors/ovl_Eff_Stk/z_eff_stk.c
+++ b/src/overlays/actors/ovl_Eff_Stk/z_eff_stk.c
@@ -5,6 +5,7 @@
  */
 
 #include "z_eff_stk.h"
+#include "objects/object_stk2/object_stk2.h"
 
 #define FLAGS (ACTOR_FLAG_10 | ACTOR_FLAG_20)
 
@@ -15,7 +16,8 @@ void EffStk_Destroy(Actor* thisx, PlayState* play);
 void EffStk_Update(Actor* thisx, PlayState* play);
 void EffStk_Draw(Actor* thisx, PlayState* play);
 
-#if 0
+void func_80BF0DE0(EffStk* this, PlayState* play);
+
 ActorInit Eff_Stk_InitVars = {
     ACTOR_EFF_STK,
     ACTORCAT_ITEMACTION,
@@ -28,16 +30,75 @@ ActorInit Eff_Stk_InitVars = {
     (ActorFunc)EffStk_Draw,
 };
 
-#endif
+void EffStk_Init(Actor* thisx, PlayState* play) {
+    EffStk* this = THIS;
 
-extern UNK_TYPE D_06009F60;
+    Actor_SetScale(&this->actor, 0.2f);
+    this->actionFunc = func_80BF0DE0;
+}
 
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/ovl_Eff_Stk/EffStk_Init.s")
+void EffStk_Destroy(Actor* thisx, PlayState* play) {
+}
 
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/ovl_Eff_Stk/EffStk_Destroy.s")
+void func_80BF0DE0(EffStk* this, PlayState* play) {
+    if (Cutscene_IsCueInChannel(play, CS_CMD_ACTOR_CUE_512)) {
+        switch (play->csCtx.actorCues[Cutscene_GetCueChannel(play, CS_CMD_ACTOR_CUE_512)]->id) {
+            case 2:
+                this->actor.draw = EffStk_Draw;
+                if (this->unk146 < 0x3C00) {
+                    this->unk146 += 0x400;
+                    this->unk148 = Math_SinS(this->unk146) * -630.0f;
+                }
+                this->unk144++;
+                break;
 
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/ovl_Eff_Stk/func_80BF0DE0.s")
+            case 3:
+                this->actor.draw = EffStk_Draw;
+                if (this->unk146 < 0x3C00) {
+                    this->unk146 += 0x400;
+                    this->unk148 = Math_SinS(this->unk146) * -630.0f;
+                }
+                this->unk144--;
+                break;
 
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/ovl_Eff_Stk/EffStk_Update.s")
+            default:
+                this->actor.draw = NULL;
+                this->unk146 = 0;
+                this->unk148 = 0.0f;
+                break;
+        }
+    }
+}
 
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/ovl_Eff_Stk/EffStk_Draw.s")
+void EffStk_Update(Actor* thisx, PlayState* play) {
+    EffStk* this = THIS;
+
+    this->actionFunc(this, play);
+}
+
+void EffStk_Draw(Actor* thisx, PlayState* play) {
+    EffStk* this = THIS;
+    s32 pad;
+    Camera* activeCam = GET_ACTIVE_CAM(play);
+    Vec3f eye = activeCam->eye;
+    Vec3f quakeOffset;
+
+    Camera_GetQuakeOffset(&quakeOffset, activeCam);
+
+    OPEN_DISPS(play->state.gfxCtx);
+
+    Gfx_SetupDL25_Xlu(play->state.gfxCtx);
+    Matrix_Translate(eye.x + quakeOffset.x, eye.y + quakeOffset.y, eye.z + quakeOffset.z, MTXMODE_NEW);
+    Matrix_Scale(0.2f, 0.2f, 0.2f, MTXMODE_APPLY);
+    Matrix_ReplaceRotation(&play->billboardMtxF);
+    Matrix_Translate(0.0f, 0.0f, this->unk148, MTXMODE_APPLY);
+
+    gSPMatrix(POLY_XLU_DISP++, Matrix_NewMtx(play->state.gfxCtx), G_MTX_NOPUSH | G_MTX_LOAD | G_MTX_MODELVIEW);
+    AnimatedMat_DrawAlphaStep(play, Lib_SegmentedToVirtual(object_stk2_Matanimheader_009F60), 1.0f, this->unk144);
+    gDPSetColorDither(POLY_XLU_DISP++, G_CD_NOISE);
+    gDPSetAlphaDither(POLY_XLU_DISP++, G_AD_NOISE);
+    gSPDisplayList(POLY_XLU_DISP++, object_stk2_DL_008920);
+    gSPDisplayList(POLY_XLU_DISP++, object_stk2_DL_008A38);
+
+    CLOSE_DISPS(play->state.gfxCtx);
+}
diff --git a/src/overlays/actors/ovl_Eff_Stk/z_eff_stk.h b/src/overlays/actors/ovl_Eff_Stk/z_eff_stk.h
index 4b2b84783c..03b6660d2b 100644
--- a/src/overlays/actors/ovl_Eff_Stk/z_eff_stk.h
+++ b/src/overlays/actors/ovl_Eff_Stk/z_eff_stk.h
@@ -9,7 +9,9 @@ typedef void (*EffStkActionFunc)(struct EffStk*, PlayState*);
 
 typedef struct EffStk {
     /* 0x000 */ Actor actor;
-    /* 0x144 */ char unk_144[0x8];
+    /* 0x144 */ s16 unk144;
+    /* 0x146 */ s16 unk146;
+    /* 0x148 */ f32 unk148;
     /* 0x14C */ EffStkActionFunc actionFunc;
 } EffStk; // size = 0x150