diff --git a/addons/game_designer/core_tab.gd b/addons/game_designer/core_tab.gd
index 890c981..5947847 100644
--- a/addons/game_designer/core_tab.gd
+++ b/addons/game_designer/core_tab.gd
@@ -18,6 +18,7 @@ var _cpu: SpinBox
 var _interval: SpinBox
 var _mana_max: SpinBox
 var _mana_regen: SpinBox
+var _mana_leech: SpinBox
 var _feat: OptionButton
 var _rows: SpinBox
 var _cols: SpinBox
@@ -43,6 +44,7 @@ func _ready() -> void:
 	_interval = _row("施法间隔(s)", UI.spin(0.05, 5, 0.05, 0.5))
 	_mana_max = _row("蓝上限(Mana Max)", UI.spin(0, 1000, 5, 100))
 	_mana_regen = _row("回蓝/秒(Mana Regen)", UI.spin(0, 100, 0.5, 5))
+	_mana_leech = _row("击杀回蓝(Mana Leech)", UI.spin(0, 100, 0.5, 0))
 	_feat = _row("特性", UI.opt(FEAT, 0))
 	_rows = _row("矩阵行(MATRIX)", UI.spin(1, 8, 1, 1))
 	_cols = _row("矩阵列(MATRIX)", UI.spin(1, 16, 1, 5))
@@ -87,6 +89,7 @@ func _on_select(idx: int) -> void:
 	_interval.value = float(d.get("cast_interval", 0.5))
 	_mana_max.value = float(d.get("mana_max", 100))
 	_mana_regen.value = float(d.get("mana_regen", 5))
+	_mana_leech.value = float(d.get("mana_leech", 0))
 	_feat.selected = int(d.get("feature_tags", 0))
 	_rows.value = float(d.get("grid_rows", 1))
 	_cols.value = float(d.get("grid_cols", 5))
@@ -106,6 +109,7 @@ func _on_apply() -> void:
 		"topology": _topo.selected, "cpu_limit": int(_cpu.value),
 		"cast_interval": _interval.value, "feature_tags": _feat.selected,
 		"mana_max": int(_mana_max.value), "mana_regen": _mana_regen.value,
+		"mana_leech": _mana_leech.value,
 		"grid_rows": int(_rows.value), "grid_cols": int(_cols.value), "edges": edges,
 	}
 	_cur = cid
@@ -118,7 +122,7 @@ func _on_new() -> void:
 	while _data.has(cid): cid = "new_core_%d" % i; i += 1
 	_data[cid] = {"display_name": cid, "slot_count": 5, "topology": 0,
 		"cpu_limit": 5, "cast_interval": 0.5, "feature_tags": 0,
-		"mana_max": 100, "mana_regen": 5, "edges": []}
+		"mana_max": 100, "mana_regen": 5, "mana_leech": 0, "edges": []}
 	_refresh()
 
 func _on_delete() -> void: